First practice test - 30, highest practice test - 37, final practice test - 33, real deal - 40. My best advice to improve on scores:
PS - Don't read the passages. Look at the graph and skim. Read the questions then go find the answers.
VR - I can't be much help here, sorry.
BS - While doing practice stuff or even just reading content review stuff, try and make sure you understand WHY things are happening. The MCAT tests your ability to deduce reasons for experimental outcomes which makes it hard for those used to just memorizing biology stuff. For this, practice is all you can do. When you are reading stuff, go slowly and ask yourself probing questions about the material. That way when the tests asks the same type of questions, you'll already have an answer in your head.