There's two things you should know:
This script is called, IntroGui and it's in Workspace. The IntroGui itself is in StarterGui, when I tried too run it, it said the first line had a mistake, what's the problem?
local Intro = script.Intro:Clone()
game.Players.PlayerAdded:connect(function(player)
player.CharacterAdded:wait()
Intro:Clone().Parent = player.PlayerGui
end)

1 comment
If the answer helped, you should mark it as accepted so other people know the problem is solved