Why my script doesn't detect the player's health?

So, I think the problem is the variable in the script I guess? Cause when I see the output its the problem maybe? So here's my script:

Hum = script.Parent.Humanoid
statVal = game.Players.LocalPlayer.Stats --Stats is the leaderboard stuff But no need to change it
Hum.Health.Changed:connect(function()
	statVal.Health.Value = Hum.Health
end)

Output : 17:09:19.219 - Workspace.Player1.HealthDetect:3: attempt to index field 'Health' (a number value) Note : Script is inside StarterCharacterScript. Please answer in the answer bar, not comments.

EDIT For FlaminSparrow : Another problem when I type this code :

Hum = script.Parent.Humanoid
statVal = game.Players.LocalPlayer.Stats
Hum.HealthChanged:connect(function()
   statVal.Health.Value = Hum.Health
end)

Output : 17:32:03.756 - Players.Player1.PlayerGui.ScreenGui.TabFrame.StatFrame.Health.LocalScript:4: attempt to concatenate global 'HealthPercentage' (a userdata value)

I am pretty sure you gotta use

Hum.HealthChanged:connect(function()
	statVal.Health.Value = Hum.Health
end)