My cash is not saving after I leave the game. This is all in a local script. How do i save it?

--Saving Script

local DSS = game:GetService("DataStoreService")

local datastore = DSS:GetDataStore("GeneralSaveData", "Players")

function generateDataKey(player)
    local ret = "uid_" .. player.userId
    return ret
end

function generateDataTable(player)
    local dataTable = {
     Cash = player.leaderstats.Cash.Value
    }
    return dataTable
end

function saveDataForPlayer(player)
    local key = generateDataKey(player)
    local data = generateDataTable(player)
    datastore:SetAsync(key, data)
end

function inputDataToPlayer(player, data)
    player.leaderstats.Cash.Value = data.Cash
end

function loadDataForPlayer(player)
    local key = generateDataKey(player)
    local data = datastore:GetAsync(key)
    inputDataToPlayer(player, data)
end

game.Players.PlayerAdded:connect(function(player)
    loadDataForPlayer(player) --Load first thing when they join
    player.leaderstats.Cash.Changed:connect(function()
        saveDataForPlayer(player) --Save the data when Cash changes value
print("SaveCash")
    end)
end)

game.Players.PlayerRemoving:connect(saveDataForPlayer) --Save data when the player leaves the game

This is the New Shop script

local player = game.Players.LocalPlayer
local price = script.Parent.Parent.Price
local tools = game.ReplicatedStorage:WaitForChild("Tools")
local tool = tools:FindFirstChild(script.Parent.Parent.ItemNameValue.Value)
local cash = player.leaderstats:WaitForChild("Cash")
local Purchased1 = script.Parent.Parent.Parent.Frame.Item1.Purchased
local Purchased2 = script.Parent.Parent.Parent.Frame.Item2.Purchased
local Purchased3 = script.Parent.Parent.Parent.Frame.Item3.Purchased
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RemoteEvents = ReplicatedStorage.RemoteEvents
local Event = RemoteEvents.Buy

    Event.OnClientEvent:Connect(function()
        if cash.Value < price.Value then
            print("NotEnough")
            game.ReplicatedStorage.NotEnough:Clone().Parent = player.PlayerGui
            wait(3)
            player.PlayerGui.NotEnough:Destroy()
        end
            if cash.Value >= price.Value then
            cash.Value = cash.Value - price.Value
            if price.Value == 100 then
                local oldGun = player.Backpack:FindFirstChildOfClass("Tool") or player.Character:FindFirstChildOfClass("Tool")
                oldGun:Destroy()
                game.ReplicatedStorage.Tools.Pistol:Clone().Parent = player.Backpack
                Purchased1.Value = 1
            end
                    if price.Value == 300 then
                local oldGun = player.Backpack:FindFirstChildOfClass("Tool") or player.Character:FindFirstChildOfClass("Tool")
                oldGun:Destroy()
                game.ReplicatedStorage.Tools.Revolver:Clone().Parent = player.Backpack
                Purchased2.Value = 1
                    end
                    if price.Value == 500 then
                local oldGun = player.Backpack:FindFirstChildOfClass("Tool") or player.Character:FindFirstChildOfClass("Tool")
                oldGun:Destroy()
                game.ReplicatedStorage.Tools.Uzi:Clone().Parent = player.Backpack
                Purchased3.Value = 1
            end
        end 
    end)

This is the RemoteEventsScript in serverscriptService

game.Players.PlayerAdded:connect(function(player)
    local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RemoteEvents = ReplicatedStorage.RemoteEvents
local Event = RemoteEvents.Buy
local Buy = player.PlayerGui:WaitForChild("Gui").Main.Info.Buy
    Buy.MouseButton1Click:Connect(function()
        Event:FireClient(player)
        print("Worked")
    end)
end)