How do you make NPCs respawn? My current script doesn't work

Well, one way is to name every NPC differently so you might name it "Bob" or "Joe" if you have 2 NPC's with the same name then this won't work.

Have these steps:

Make sure you have 2 of the NPC

Have 1 in WorkSpace

Have 1 in ReplicatedStorage

Make sure you know where you want the NPC to spawn

Put this script in serverScriptService

local spawnLocation = game.Workspace:WaitForChild("NPCSpawn") --Where you want the NPC to spawn

while true do
    wait()
    if not game.Workspace.FindFirstChild("NPCNAME") then--Npc name here 
        local CloneNpc = game.ReplicatedStorage:WaitForChild("NPCName"):Clone()
        CloneNpc.Parent = game.Workspace
        CloneNpc.Position = Vector3.new(spawnLocation.Postion)
    end
end

Make sure you name everything correctly if there is any errors or comment, comment on this answer. Otherwise, if it worked please accept answer ;)

DaHealth = 100 -- Change this to full health
DeHealth = 0
Hum = script.Parent.Humanoid.Health
Photon = true -- Hehe :)

while Photon == true then 
if Hum == DeHealth then -- If the health is 0
wait(3)
Hum = DaHealth -- The Health will go to Full Health.
end)

I don't know if it will work.