How to make leaderboard with IntValues?

local function onPlayerJoin(player)
    local leaderstats = Instance.new("Folder")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = player

    local Coins = Instance.new("IntValue")
    Coins.Name = "Coins"
    Coins.Value = 0
    Coins.Parent = leaderstats
end

game.Players.PlayerAdded:Connect(onPlayerJoin)

I hope this helped answer your question. If you have any problems ask me.

(EDIT) I forgot to mention that you insert a script inside of serverscriptservice and paste that

another edit! since you wanted your code to coins as a screen gui just put this script inside of a text label

local player = game.Players.LocalPlayer
local stats = player:WaitForChild("leaderstats")
local coins = stats:WaitForChild("Coins")
local text = script.Parent

text.Text = "Coins:  "..coins.Value
coins("Value"):Connect(function()
    text.Text = "Coins:  "..coins.Value
end)

if you have any more questions ask me!

Well I can explain throughly so you can understand...

Let’s start with the function() that will run when the player joins the game

game.Players.PlayerAdded:Connect(function(player)

end)

Now let’s reference the Leaderstats , it should look like this (it is a “Folder” by the way)

game.Players.PlayerAdded:Connect(function(player)
   local leaderstats = Instance.new("Folder")
   leaderstats.Name = "leaderstats"
   leaderstats.Parent = player
end)

There. , NOW let’s make some money! Won’t be hard don’t worry! Cash will not be a Folder but it’s a IntValue

game.Players.PlayerAdded:Connect(function(player)
   local leaderstats = Instance.new("Folder")
   leaderstats.Name = "leaderstats"
   leaderstats.Parent = player

   local Cash = Instance.new("IntValue")
   Cash.Name =  "Cash"
   Cash.Value = 0
   Cash.Parent =  "leaderstats"
end)

Also if you want to change the amount of Cash you have then, change the number of the Value

And now you are finally done! If you need any further help please contact me here. Bye!