You can actually edit the names of scripts even if you didn’t name the script to something other than NewBehaviourScript (when initialliy creating a new script).
Example:
public class NewBehaviourScript : MonoBehaviour
{
//your code
}
to…
public class YourScript : MonoBehaviour
{
//your code
}
Also make sure to rename the script file to the same name as your class as well.