How do I get the value of an ObjectValue?

So I've been trying to make killstreaks for my game but every time I try to get the value of creator from the humanoid of the player that dies it comes up with this error:

20:01:55.010 - Workspace.OnDeath:34: bad argument #2 to '?' (string expected, got userdata) 20:01:55.011 - Script 'Workspace.OnDeath', Line 34 20:01:55.012 - Stack End

And this is the part of the script in which the error is happening:

Game.Players.PlayerAdded:connect(function(plr)
	plr.CharacterAdded:connect(function(char)
		plr:WaitForChild("Data"):WaitForChild("Morph") wait(0)
		if plr.TeamColor ~= Game.Teams.Lobby.TeamColor then
			Game.Workspace:FindFirstChild(plr.Data.Morph.Value):Invoke(plr.Character)
			Game.ServerStorage.Weapons:FindFirstChild(plr.Data.Morph.Value):Clone().Parent = plr.Character
			local HealthManager = script.HealthManager:Clone()
			HealthManager.Parent = plr.Character:FindFirstChild("Humanoid")
			HealthManager.Disabled = false
			local Killstreak = Instance.new("IntValue", plr.Character)
			Killstreak.Name = "Killstreak"
			
			print(plr.Character:FindFirstChild("Killstreak"))

			plr.Character.Humanoid.Died:connect(function()
				print("Person died")
				if plr.Character.Humanoid:FindFirstChild("creator") then
					creat = plr.Character.Humanoid:FindFirstChild("creator")
					local killer = game.Players[creat.Value]
					print(killer)