Would this saving script work?

Help and Feedback Scripting Support
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1

code:

local Datastore = game:GetService("DataStoreService")
local data = Datastore:GetDataStore("data")

game.Players.PlayerAdded:Connect(function(player)
	local leadstats = Instance.new("Folder")
	leadstats.Name = "leaderstats"
	leadstats.Parent = player
	playerUserId = "Player_"..player.UserId
	
	local checkpoints = Instance.new("IntValue")
	checkpoints.Name = "Checkpoint"
	checkpoints.Parent = leadstats
	local chaptercompleted = Instance.new("IntValue")
	chaptercompleted.Name = "completion"
	chaptercompleted.Parent = leadstats
	local load = Instance.new("IntValue")
	
	local save
	local success, errormsg = pcall(function()
		save = data:GetAsync(playerUserId)
	end)
	if success then
		checkpoints.Value = save
		
		end
end)

game.Players.PlayerRemoving:Connect(function(player)
	local success, errormsg
	success, errormsg = pcall(function()
		local save = player.leaderstats.checkpoints.Value 
		
			data:SetAsync(playerUserId, save)
		if success then
			print("Data saved")
		else
			game.Players.LocalPlayer:WaitForChild("DebugScreen"):WaitForChild("DebugFrame").Visible = true
			warn(errormsg)
			end
		end)
 end)

it’s supposed to save the values so i can load it in the menu for checkpoint selections and checking if the player beat the chapter.