How would I make a Tycoon Saving Progress and Money? [closed]

If you use this code, You gotta try it in a real game

Add a script to server script service and call it dataHandler or whatever you want

Here's the code you use:

-- Adding variables like the data store service, myData store is your data store, Players left is to detect if there's amount of players to detect when the server can shutdown
local dataStoreService = game:GetService("DataStoreService")
local myDataStore = dataStoreService:GetDataStore("RobloxDataStore")
local playersLeft = 0

game.Players.PlayerAdded:Connect(function(player)

    -- every time a player joins it add 1 more to the players left

    playersLeft = playersLeft + 1

    -- Adding money to the play
    local leaderstats = Instance.new("Folder")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = player

    local money = Instance.new("IntValue")
    money.Name = "Money"
    money.Value = 0
    money.Parent = leaderstats

    -- This adds data into the player data with userid

    local PlayerUserId = player.UserId

    -- Making a blank variable to store data

    local player_data

    -- Checks if it's successful or else you get an error message
    -- Makes a pcall so if there's an error it won't break the script

    local success, errorMessage = pcall(function()

        -- Sets player_data as players userid in your datastore

        player_data = myDataStore:GetAsync(PlayerUserId)
    end)

    -- If it's successful then the money will be what we saved

    if success then
        money.Value = player_data.Money
    end
end)

-- Makes a bindable event, Used to tell the script to do something when the game is shutting down

local bindableEvent = Instance.new("BindableEvent")

-- Fires what a player leaves the game

game.Players.PlayerRemoving:Connect(function(player)

    -- Gets the userid again

    local playerUserId = player.UserId

    -- The player_data you can save money is your money value

    local player_data = {
        Money = player.leaderstats.Money.Value
    }

    -- When a player leaves it will set your money to money in player data at the amount of money you have

    local success, errorMessage = pcall(function()
        myDataStore:SetAsync(playerUserId, player_data)

        -- Removes from players left

        playersLeft = playersLeft - 1

        -- Fires the bindable event

        bindableEvent:Fire()
    end)

    -- If it was successful then it prints saved to tell you that it was successful else it tells you what the problem is

    if success then
        print("Saved!")
    else
        warn(errorMessage)
    end
end)

-- If the players left is above 0 then the server is gonna wait until everyone's data was saved and then it can shut down

if playersLeft > 0 then
    bindableEvent.Event:Wait()
end

please read what I put the green things in, I tell you how it works