Do I place my GUI script in PlayerGUI, or do I do something else?

Hello,

I see that you want to create a GUI just for yourself. If you put it in the StarterGUI, all the players that join the game will get it. This means it removes the idea of it being only unique to you, and only you have access to it. This is because when a player joins, the stuff in StarterGUI is replicated to the PlayerGui, so that every player that joins the game will get it.

Well, I'm not entirely sure who you want this GUI to show up to, as in like if you want the button to show up for everyone, but the frame doesn't or you only want to see the Open button. The following Script has been made by modifying your current submission.

Also, I haven't done anything like work on the button, so they actually do anything. That you will have to do yourself, but I fixed a few issues that were inside the script, and I made it, so you when you press the button, and the frame isn't visible, it changes the text to "Close" , and when you press "Close", the frame goes invisible and the text becomes "Open".

Apart from that, I also made it so that if you are named "ItzTony_V" (that's my username, I did it for a test), the open button would only show up .

Anyways, here you go:

-- Farewell Infortality.
-- Version: 2.82
-- Instances:

--local bool variable (for the button)
local opened = false

--function to check if the player that has joined has the same name as the ones in the Speechmarks. 
game.Players.PlayerAdded:Connect(function(plr) -- The parameter is plr (can be anything, but it returns the data of the player that has joined. (i.e name)
    if plr.Name == "ItzTony_V" then -- if it's this name then (Change it to yours)

-- GUI creation
    local ScreenGui = Instance.new("ScreenGui")
    local openframe = Instance.new("Frame")
    local Open = Instance.new("TextButton")
    local Alldescripts = Instance.new("Frame")
    local CreditTitle = Instance.new("TextBox")
    local UniverGlitc = Instance.new("TextButton")
    local Nightfall = Instance.new("TextButton")
    local SunGod = Instance.new("TextButton")
    local Gunjourer = Instance.new("TextButton")
    local NeptunianV = Instance.new("TextButton")
    local SpectrumGlitcher = Instance.new("TextButton")
    local TheReanimated = Instance.new("TextButton")
    local FloatingKatanas = Instance.new("TextButton")
    local Close = Instance.new("TextButton")
    --Properties:
    ScreenGui.Parent = plr.PlayerGui

    openframe.Name = "openframe"
    openframe.Parent = ScreenGui
    openframe.BackgroundColor3 = Color3.new(0.4, 0.4, 0.4)
    openframe.BackgroundTransparency = 0.5
    openframe.Position = UDim2.new(0, 14, 0, 332)
    openframe.Size = UDim2.new(0, 76, 0, 26)

    Open.Name = "Open"
    Open.Parent = openframe
    Open.BackgroundColor3 = Color3.new(1, 1, 1)
    Open.Position = UDim2.new(0, 1, 0, 5)
    Open.Size = UDim2.new(0, 74, 0, 15)
    Open.Style = Enum.ButtonStyle.RobloxRoundButton
    Open.Font = Enum.Font.SourceSans
    Open.Text = "Open"
    Open.TextColor3 = Color3.new(0, 0, 0)
    Open.TextSize = 14
    Open.MouseButton1Down:Connect(function()
    openframe.Visible = true  -- The text change for the button. 
            if opened == false then
                Open.Text = "Close"
                Alldescripts.Visible = true
                opened = true
            elseif opened == true then
                Open.Text = "Open"
                Alldescripts.Visible = false
                opened = false
            end -- ends the if statement. 

    end) -- ends the mousebutton1Down function

    -- Didnt Touch anything else , because you can do it however you want. 

    Alldescripts.Name = "All de scripts"
    Alldescripts.Parent = ScreenGui
    Alldescripts.BackgroundColor3 = Color3.new(1, 1, 1)
    Alldescripts.Position = UDim2.new(0.597058833, 0, 0.529090941, 0)
    Alldescripts.Size = UDim2.new(0, 375, 0, 238)
    Alldescripts.Visible = false
    Alldescripts.Style = Enum.FrameStyle.DropShadow
    Alldescripts.Active = true 
    Alldescripts.Draggable = true

    CreditTitle.Name = "Credit / Title"
    CreditTitle.Parent = Alldescripts
    CreditTitle.BackgroundColor3 = Color3.new(0, 0, 0)
    CreditTitle.Position = UDim2.new(0.207694173, 0, 0.0414518453, 0)
    CreditTitle.Size = UDim2.new(0, 200, 0, 24)
    CreditTitle.Font = Enum.Font.SourceSans
    CreditTitle.Text = "SS GUI | By Darkraiii"
    CreditTitle.TextColor3 = Color3.new(0.666667, 0, 0)
    CreditTitle.TextSize = 14


    UniverGlitc.Name = "Univer Glitc"
    UniverGlitc.Parent = Alldescripts
    UniverGlitc.BackgroundColor3 = Color3.new(0.564706, 0.564706, 0.564706)
    UniverGlitc.Position = UDim2.new(0, 1, 0, 41)
    UniverGlitc.Size = UDim2.new(0, 124, 0, 17)
    UniverGlitc.Style = Enum.ButtonStyle.RobloxRoundButton
    UniverGlitc.Font = Enum.Font.SciFi
    UniverGlitc.Text = "Universal Glitcher"
    UniverGlitc.TextColor3 = Color3.new(0, 0, 0)
    UniverGlitc.TextSize = 14
    UniverGlitc.MouseButton1Down:Connect(function()
    require(2699033067).ug(owner.Name) -- don't understand what you've tried here
    end)

    Nightfall.Name = "Nightfall"
    Nightfall.Parent = Alldescripts
    Nightfall.BackgroundColor3 = Color3.new(0.564706, 0.564706, 0.564706)
    Nightfall.Position = UDim2.new(0, 234, 0, 41)
    Nightfall.Size = UDim2.new(0, 124, 0, 17)
    Nightfall.Style = Enum.ButtonStyle.RobloxRoundButton
    Nightfall.Font = Enum.Font.SciFi
    Nightfall.Text = "Nightfall"
    Nightfall.TextColor3 = Color3.new(0, 0, 0)
    Nightfall.TextSize = 14
    Nightfall.MouseButton1Down:Connect(function()
    require(2695254900).Load("Darkraiii7")
    end)

    SunGod.Name = "Sun God"
    SunGod.Parent = Alldescripts
    SunGod.BackgroundColor3 = Color3.new(0.564706, 0.564706, 0.564706)
    SunGod.Position = UDim2.new(0, 1, 0, 80)
    SunGod.Size = UDim2.new(0, 124, 0, 17)
    SunGod.Style = Enum.ButtonStyle.RobloxRoundButton
    SunGod.Font = Enum.Font.SciFi
    SunGod.Text = "Sun God"
    SunGod.TextColor3 = Color3.new(0, 0, 0)
    SunGod.TextSize = 14
    SunGod.MouseButton1Down:Connect(function()
    require(2620399652).Load("Darkraiii7")
    end)

    Gunjourer.Name = "Gunjourer"
    Gunjourer.Parent = Alldescripts
    Gunjourer.BackgroundColor3 = Color3.new(0.564706, 0.564706, 0.564706)
    Gunjourer.Position = UDim2.new(0, 234, 0, 80)
    Gunjourer.Size = UDim2.new(0, 124, 0, 17)
    Gunjourer.Style = Enum.ButtonStyle.RobloxRoundButton
    Gunjourer.Font = Enum.Font.SciFi
    Gunjourer.Text = "Gunjourer"
    Gunjourer.TextColor3 = Color3.new(0, 0, 0)
    Gunjourer.TextSize = 14
    Gunjourer.MouseButton1Down:Connect(function()
    require(2695269095).Load("Darkraiii7")
    end)

    NeptunianV.Name = "Neptunian V"
    NeptunianV.Parent = Alldescripts
    NeptunianV.BackgroundColor3 = Color3.new(0.564706, 0.564706, 0.564706)
    NeptunianV.Position = UDim2.new(0, 1, 0, 140)
    NeptunianV.Size = UDim2.new(0, 124, 0, 17)
    NeptunianV.Style = Enum.ButtonStyle.RobloxRoundButton
    NeptunianV.Font = Enum.Font.SciFi
    NeptunianV.Text = "Neptunian V"
    NeptunianV.TextColor3 = Color3.new(0, 0, 0)
    NeptunianV.TextSize = 14
    NeptunianV.MouseButton1Down:Connect(function()
    require(2588636859).Load("Darkraiii7")
    end)



    SpectrumGlitcher.Name = "Spectrum Glitcher"
    SpectrumGlitcher.Parent = Alldescripts
    SpectrumGlitcher.BackgroundColor3 = Color3.new(0.564706, 0.564706, 0.564706)
    SpectrumGlitcher.Position = UDim2.new(0, 234, 0, 140)
    SpectrumGlitcher.Size = UDim2.new(0, 124, 0, 17)
    SpectrumGlitcher.Style = Enum.ButtonStyle.RobloxRoundButton
    SpectrumGlitcher.Font = Enum.Font.SciFi
    SpectrumGlitcher.Text = "Spectrum Glitcher"
    SpectrumGlitcher.TextColor3 = Color3.new(0, 0, 0)
    SpectrumGlitcher.TextSize = 14
    SpectrumGlitcher.MouseButton1Down:Connect(function()
    require(2608304185).Load("Darkraiii7")
    end)

    TheReanimated.Name = "The Reanimated"
    TheReanimated.Parent = Alldescripts
    TheReanimated.BackgroundColor3 = Color3.new(0.564706, 0.564706, 0.564706)
    TheReanimated.Position = UDim2.new(0, 1, 0, 183)
    TheReanimated.Size = UDim2.new(0, 124, 0, 17)
    TheReanimated.Style = Enum.ButtonStyle.RobloxRoundButton
    TheReanimated.Font = Enum.Font.SciFi
    TheReanimated.Text = "Reanimated"
    TheReanimated.TextColor3 = Color3.new(0, 0, 0)
    TheReanimated.TextSize = 14
    TheReanimated.MouseButton1Down:Connect(function()
    require(2614440958).Load("Darkraiii7")
    end)

    FloatingKatanas.Name = "Floating Katanas"
    FloatingKatanas.Parent = Alldescripts
    FloatingKatanas.BackgroundColor3 = Color3.new(0.564706, 0.564706, 0.564706)
    FloatingKatanas.Position = UDim2.new(0, 234, 0, 183)
    FloatingKatanas.Size = UDim2.new(0, 124, 0, 17)
    FloatingKatanas.Style = Enum.ButtonStyle.RobloxRoundButton
    FloatingKatanas.Font = Enum.Font.SciFi
    FloatingKatanas.Text = "Floating Katanas"
    FloatingKatanas.TextColor3 = Color3.new(0, 0, 0)
    FloatingKatanas.TextSize = 14
    FloatingKatanas.MouseButton1Down:Connect(function()
    require(2554152422).load("Darkraiii7")
    end)

    Close.Name = "Close"
    Close.Parent = Alldescripts
    Close.BackgroundColor3 = Color3.new(1, 1, 1)
    Close.Position = UDim2.new(0.898264647, 0, 0.0124336034, 0)
    Close.Size = UDim2.new(0, 25, 0, 19)
    Close.Style = Enum.ButtonStyle.RobloxRoundButton
    Close.Font = Enum.Font.SourceSans
    Close.Text = "X"
    Close.TextColor3 = Color3.new(0, 0, 0)
    Close.TextSize = 14
    Close.MouseButton1Down:Connect(function()
    Alldescripts.Visible = false
    end)

    else 
        script.Disabled = true
        end
end)

Also, Can I ask, did you make it yourself, or did you copy it? It has deprecated words such as connect.