I'm sorry you're having a tough time with the test.
How have you studied so far? What were your scores on your practice tests? Did you take your practice tests under official conditions?
I'm not sure I can improve the V any more, I did my best in and that I what I got .. but I might be able to improve the V ..
Can you clarify? You put V down for both parts of that sentence. For which part did you mean to say Q?
A 550 could be many different combinations of quant and verbal. If your quant were to stay at around 31 (around the 30th percentile), then your verbal would have to be about 37 or 38 (the 80+ percentile). That would be very tough to do. If your verbal score were to stay the same, you would not be able to reach 550 on the test. So you're probably going to have to improve in both sections.
If you could improve your quant to around the 60th percentile (40 or 41), then you would need to improve your verbal to around the 50th percentile (28 or 29). That would be fairly balanced improvement across both sections; if you improve one more, then you wouldn't need to improve the other as much.
Let me know how you studied, what materials you used, what your strengths and weaknesses are, and how you were doing on practice tests. Also, if your official test score represented a big score drop compared to your practice tests (more than about a 60 to 70 point drop), then the below article might be useful for you. If that's the case, please do the analysis described in the article and tell us what you find out.
http://www.beatthegmat.com/a/2009/10/26/my-score-dropped-figuring-out-what-went-wrong