Obby Checkpoint and Leaderstats?

First start with creating a leaderstats and inserting IntValue.

-- Server Script --

game.Players.PlayerAdded:Connect(function(player)
	
	local leaderstats = Instance.new("Folder")
	leaderstats.Parent = player
	leaderstats.Name = "leaderstats"
	
	local stage = Instance.new("IntValue")
	stage.Parent = leaderstats
	stage.Name = "Stage"
	stage.Value = 0
	
end)

Now we have a leaderstats and IntValue called "Stage". So what you want to do now is to add teams and, insert a "SpawnLocation" and mark "AllowTeamChangeOnTouch". If you dont want players to see the teams you can insert a local script in starter gui and code:

game.StarterGui:SetCoreGuiEnabled("PlayerList ", false)

And now, we want that everytime we will touch the next spawn it will type in what stage the player is. So we need to insert a normal script in the SpawnLocation and script:

script.Parent.Touched:Connect(function(hit)
	
	if hit.Parent:FindFirstChild("Humanoid") then
		
		local player = game.Players:FindFirstChild(hit.Parent.Name)
		
		player.leaderstats.Stage.Value = NUMBERHERE
		
	end
	
end)

I hope I helped you and if I missed anything please let me know :D