I need help with this problem?

How do you create a script that when a part is clicked it pops up a ScreenGui any ways how?

script.Parent = Instance.new("ClickDetector")
script.Parent.ClickDetector.MouseClick:connect(function()
	game.Players:WaitForChild("PlayerGui").ScreenGui.TextBox.Visible = true
end)

You can use ClickDetector and put it in the part so that you can make a function, go to this for more information : http://wiki.roblox.com/index.php?title=Making_an_onClicked_script

You could just put a SurfaceGui into the part, put a TextButton in the part, change the textures and all that, then put a script in the TextButton with this code:

function onClick()
	game.StarterGui.ScreenGui.Enabled = true -- Change the ScreenGui to whatever the Gui is called
end

script.Parent.MouseButton1Click:connect(onClick)

Make everything within the screengui is visible, then just untick the enabled box in the screengui properties

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