If I am not wrong:
The more stars you have beside your name the more contribution you have made in the community. It does not mean your contributions were 100 correct. You can post an answer to a question and the person who posted the question is the entitled to check or mark if your response answered his or her question.
You can review your profile and see badges and likes achieved or you are collecting for answering or participating in this community.
Welcome to the community.