Why does this click script not work? [BlueTaslem please answer]

The error for the script is: local player = game.Players.LocalPla:3: attempt to index global 'script' (a nil value) If you're wondering, number is a stringValue and upgrade is an IntValue.

local pass = 182358984
local player = game.Players.LocalPlayer
upgrade = script.Parent.Parent.TextLabel.Upgrade
number = script.Parent.Parent.TextLabel.Number

function Auth(player)
	return game:GetService("GamePassService"):PlayerHasPass(player, pass)
end

script.Parent.MouseButton1Click:connect(function()
	if Auth() then
		upgrade.Value = 3
	else
		upgrade.Value = 1
	end
	number.Value = number.Value + upgrade.Value
end)