attempt to index field 'LocalPlayer' (a nil value)?

Here is code

wait (10)
local dil = game.Players.LocalPlayer.Backpack.Stats.Dil.Value
if dil == "ES" then
	GUI = game.ReplicatedStorage.SehireES
else
	if dil == "EN" then
		GUI = game.ReplicatedStorage.SehireEN
	else
		GUI = game.ReplicatedStorage.Sehire
	end
end

Play = game.Players
script.Parent.Touched:connect(function (hit)
if hit.Parent and game.Players:FindFirstChild(hit.Parent.Name) then
Play = game.Players[hit.Parent.Name]
if Play:FindFirstChild("PlayerGui") and not Play.PlayerGui:FindFirstChild(GUI.Name) then
GUI:Clone().Parent = Play.PlayerGui
end
end
end)

it needs to work but this script is not working

You can only index LocalPlayer if the script is a localscript. On normal scripts, the server doesn't know what LocalPlayer is, so it's impossible to access.

Execute in LocalScript.