How to create a Gamepass Script?

If someone Purchases the gamepass, in game, they will get the script (walkspeed, tool)

okk so the terms for gamepasses and stuff are these UserOwnsGamePassAsync(), PromptGamePassPurchase() so basically if you waned to give extra walkspeed and a tool you would use a local script for this and start of like this

local plr = game.Players.LocalPlayer--gets player locally
local market = game:GetService("MarketPlaceService")--Sets up the service for gamepasses and sells
local gamepassid = 0--YOUR GAMEPASS ID
local tool = game.ReplicatedStorage.Tool--Best way is to put that tool in replic

if market:UserOwnsGamePassAsync(plr.UserId, gamepassid)then--if statement if they own it
plr.Character.Humanoid.Speed = 32--Make this the speed of them if they own gamepass
tool:Clone().Parent = plr.BackPack--Clones tool and puts in plrs backpack
end--ends if statement

kk so this is some basic stuff if this helps accept