My data store does not save data. Is there something wrong that I did?

Here is the code:

local dataStore = game:GetService("DataStoreService")

local levelData = dataStore:GetDataStore("LevelSaveSystem")
local xpData = dataStore:GetDataStore("XPSaveSystem")
local goldData = dataStore:GetDataStore("GoldSaveSystem")

game.Players.PlayerAdded:connect(function(player)
	
	local leaderstats = Instance.new("Folder", player)
	leaderstats.Name = "leaderstats"
	
	local level = Instance.new("IntValue", leaderstats)
	level.Name = "Level"
	
	local XP = Instance.new("IntValue", leaderstats)
	XP.Name = "XP"
	
	local gold = Instance.new("IntValue", leaderstats)
	gold.Name = "Gold"
	
	local userLevel
	local userXP
	local userGold
	local success, err = pcall(function()
		userLevel = levelData:GetAsync(player.UserId) or 1
		userXP = xpData:GetAsync(player.UserId)
		userGold = goldData:GetAsync(player.UserId)
	end)
	if success then
		if userLevel and userXP and userGold then
			wait()
			level.Value = userLevel
			XP.Value = userXP
			gold.Value = userGold
		end
	elseif err then
		player:Kick("Save Data not loaded, please try rejoining.")
	end
	print(err)
	
	game.Players.PlayerRemoving:connect(function(player)
		local currentLevel = level.Value
		local currentXP = XP.Value
		local currentGold = gold.Value
		local success, err = pcall(function()
			levelData:SetAsync(player.UserId, currentLevel)
			xpData:SetAsync(player.UserId, currentXP)
			goldData:SetAsync(player.UserId, currentGold)
		end)
		if success then
			print("Data Successfully Saved for user "..player.UserId)
		end
		if err then
			print("There was an error in saving data!")
			warn(err)
		end
	end)
end)