How can i make this script repeat after death?

Here is the script

local Player = game.Players.LocalPlayer --get the local player
 
local LVL = Player:WaitForChild("LevelingSystem"):WaitForChild("Lvl") --common reason as to why some LocalScripts don't work in studio, things haven't loaded in
 
LVL:GetPropertyChangedSignal("Value"):Connect(function()
 
    Player.Character.Humanoid.MaxHealth = LVL.Value * 100
wait(0.1)
    Player.Character.Humanoid.Health = Player.Character.Humanoid.MaxHealth

end)

put in starterpack so it spawns with each person, if that is what you mean, otherwise i dont understand.

This one is going to be really simple. We will simply connect the function you already made to the CharacterAdded event for the player.

local Player = game.Players.LocalPlayer --get the local player

local LVL = Player:WaitForChild("LevelingSystem"):WaitForChild("Lvl") --common reason as to why some LocalScripts don't work in studio, things haven't loaded in

function levelup()
    local humanoid = Player.Character:WaitForChild("Humanoid")
    humanoid.MaxHealth = LVL.Value * 100
    wait(0.1)
    humanoid.Health = Player.Character.Humanoid.MaxHealth
end

LVL:GetPropertyChangedSignal("Value"):Connect(levelup)
Player.CharacterAdded:Connect(levelup)