Leaderboard Script won't Work?

I made a leaderboard script. The script shows that if a player has 13500 XP, they would get 1 level. Same with if they got 27000-54000 they would get 1 level. But I'm having trouble with level.Value +1. It keeps saying "= expected near +". I tried doing that but still a red underline. Any help please? Here is the script:

local Use_DB = true 
Cash = script.Parent.Parent.Parent.Parent.Parent.leaderstats.XP
level = script.Parent.Parent.Parent.Parent.Parent.leaderstats.Level

function saveStat(plr,val,key)
	if plr then
		plr:WaitForDataReady()
		plr:SaveNumber(key,val)
	end
end

function loadStat(plr,key,stat)
	if plr then
		plr:WaitForDataReady()
		stat.Value = plr:LoadNumber(key,val)
	end
end

game.Players.PlayerAdded:connect(function(player)
	Stat = Instance.new("IntValue",player)
	Stat.Name = "leaderstats"
	Kills = Instance.new("IntValue",Stat)
	Kills.Name = "Level"
	if Use_DP then
		loadStat(player,"Level",Kills)
	end
	if Cash.Value>= 13500 then
		level.Value +1
		if Cash.Value>= 27000 then
			level.Value +1
			if Cash.Value>= 40500 then
				level.Value +1
				if Cash.Value>= 54000 then
					level.Value +1
				end
			end
		end
			
					end
				end)

Please get me a answer!

When creating a Leaderboard script always add a wait in the PlayerAdded function like so:

repeat wait() until player.Character

The way you changed the values of "Level" is wrong, it should be:

level.Value = level.Value + 1