Hi bgirla22,
Nice work on improving your GMAT score to a 600! I am happy to provide some specific advice of how to improve your quant score; however, it would be helpful to first learn some more about your GMAT experience and MBA goals. I have a few questions:
1) What is your GMAT score goal?
2) What is your study routine? For how many months have you been studying and for how many hours a day? What resources have you been using for your prep?
3) Have you taken any official MBA.com exams? If so, can you provide the dates and score breakdowns of those exams? When you took the practice tests, did you take them under realistic conditions (e.g. in a quiet environment, no extended breaks)?
4) To which schools do you plan to apply?
5) What deadlines are you targeting?
Once I have this information, I’m happy to provide some advice.