DataStore Roblox

local DDS = game:GetService("DataStoreService")
local DataStore = DDS:GetDataStore("MyData")

game.Players.PlayerAdded:Connect(function(p)
    local leaderstats = Instance.new("Folder", p)
    leaderstats.Name = "leaderstats"

    local Hammers = Instance.new("IntValue", leaderstats)
    Hammers.Name = "Hammers"

    local data
    local success, err = pcall(function()
        data = DataStore:GetAsync(p.userId.."-Hammers")
    end)

    if success then
        print("data successfully retrieved")
        Hammers.Value = data
    elseif err then
        warn("data didn't get retrieved")
        p:Kick("Your data didn't get retrieved correctly. Please rejoin, or contact a database admin.")
    end
end)

game.Players.PlayerRemoving:Connect(function(p)
    local success, err = pcall(function()
        DataStore:SetAsync(p.userId.."-Hammers", p.leaderstats.Hammers.Value)
    end)

    if success then
        print("saved data")
    elseif err then
        warn("data unsuccessfully saved")
    end
end)