how do i solve it

GameScore.RegisterDeath (gameObject); this is my part of a health script and my problem is it gives me a error unknown identifier plss help thxx

Unknown identifier indicates that one of the methods or variables is not recognized (or that you’ve forgotten a semicolon). Have you got a class instance named GameScore? Do you have a method in that class named RegisterDeath? and is gameObject an actual object reference?

In the future, please be more specific about your question and please post more code, we do not magically know what your code does or how it acts.