Why doesn't the first function run?

local Humanoid = script.Parent:WaitForChild("Humanoid")	
local currentHealth = Humanoid.Health	
local RewardGold = script.Parent.Rewards.Gold.Value
local RewardExp = script.Parent.Rewards.Exp.Value	
local Player = game.Players.LocalPlayer
local Gold = game.ReplicatedStorage:WaitForChild(Player.Name.." Values").Gold
local Exp = game.ReplicatedStorage:WaitForChild(Player.Name.." Values").Exp
--Variables

Humanoid.Died:connect(function()    --This function Doesn't Run
	print("This Will Display if Function Runs")

	--Changes an IntValue in ReplicatedStorage
	Gold.Value = Gold.Value + 5			
	Exp.Value = Exp.Value + 1
end)

Humanoid.HealthChanged:connect(function(Health)			--This Runs
	local Change = math.floor(currentHealth - Health)
	local Gui = script.Parent.Head:FindFirstChild("Damage")
	if Change > 0 then
		if Gui == nil then
			Gui = Instance.new("BillboardGui", script.Parent.Head)
			Gui.Name = "Damage"
			Gui.Size = UDim2.new(0,100,0,10)
			Gui.StudsOffset = Vector3.new(0,3,0)
			Gui.MaxDistance = 20
			
			--This Will Display Damage Player has done
			local DamageIndicator = Instance.new("TextLabel", Gui)      
			DamageIndicator.TextColor3 = Color3.new(255,255,255)
			DamageIndicator.Text = Change
			DamageIndicator.BackgroundTransparency = 1
			DamageIndicator.Size = UDim2.new(1,0,1,0)
			currentHealth = math.floor(math.abs(currentHealth - Change))
			wait(1)
		end
	end
	if Gui ~= nil then
		Gui:Remove()
	end
end)

This is a localscript inside of an npc

i created a print to test if the first function runs at all and nothing is displayed in output. No errors are shown either. I also have filtering enabled if that is doing something.

what am i doing wrong?

LocalScripts won't run in the Workspace, where I assume your NPC is. Try changing to a regular Script.