How do i Make more levels in my game

Hi I have a problem i would like to make more then one scene in my game how would i do it what would be the script

You can make new scenes/levels by pressing File-->New Scene, to load that scene you need to include it in the build settings ( File-->Build Settings) and then call this code (or similar) to load it during runtime:

Application.LoadLevel("MyCoolLevel");

Please see this related question.