Health Bar Script

local Player = game.Players.LocalPlayer
local Character = Player.Character or Player.CharacterAdded:Wait()
local Humanoid = Character:WaitForChild("Humanoid")

Humanoid.HealthChanged:Connect(function(CurrentHealth)
    script.Parent.Size = UDim2.new(CurrentHealth / Humanoid.MaxHealth, 0, 1, 0)
end)