How do I make this Game Pass disable and enable a script?!

I am bad at scripting and I found this script and edited it, but of course it was wrong. I want to make it where it enables or disables a script, FOR THE LOCAL PLAYER! I have the script below, please fix it!

Inside of {ServerScriptService} there are MainTokens and TokensDouble scripts. TokensDouble script is disabled and MainTokens is enabled!

I know it is game.Players.LocalPlayer.Something, but I don't know what. PLEASE HELP ME!

local passId = 910298336 -- change this to your game pass ID.
 
function isAuthenticated(player) -- checks to see if the player owns your pass
    return game:GetService("MarketplaceService"):PlayerOwnsAsset(player, passId)
end
 
game.Players.PlayerAdded:connect(function(plr)
    if isAuthenticated(plr) then
	game.Players.LocalPlayer.PlayerScripts.MainTokens.Disabled = true
	game.Players.LocalPlayer.PlayerScripts.TokensDouble.Disabled = false
else
	game.Players.LocalPlayer.PlayerScripts.MainTokens.Disabled = false
	game.Players.LocalPlayer.PlayerScripts.TokensDouble.Disabled = true
    end
end)