Your points depend on the quality of your answers. Thus, you need to keep writing answers to get more points. If you get a question, which you cannot answer well, then simply ignore it. If you have a problem in writing a complete answer, then you can answer first and post the rest of the answer later, when you get some time. You will get the same number of points if you answer first or later. You can also make comments on some questions, if that helps you to make a complete answer. Also, you can give a feedback to a post, which you think has enough feedback already. That way, you can increase the number of responses on the same post. You can also vote on answers and comments to highlight the best content and get some points.