Hi Muskaan15,
The question that you're asking depends a great deal on your current 'ability level'; for example, if you're currently scoring in the low-400s, then picking up an additional 50 points is considerably easier than if you are currently scoring in the low-700s. If you have been consistently scoring at a certain level for some time though, then you may have developed some 'bad habits' that are keeping you from scoring higher - and that would mean that you might need a month (or more) or consistent, guided study time to pick up those additional points.
Before I can offer you any additional advice for your studies, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied? How many hours do you typically study each week?
2) What study materials have you used so far? What “brands” of CATs/mocks have you used?
3) On what dates (or approximate dates) did you take EACH of your CATs/mocks and how did you score on EACH (including the Quant and Verbal Scaled Scores for EACH)?
Goals:
4) What is your overall goal score?
5) When are you planning to apply to Business School and what Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich