Hi PankajPrasad,
A 590 is a solid initial CAT score (the Average Score on the Official GMAT hovers around 550 most years). Obviously, you will have to hone a number of different Quant and Verbal skills before you will be able to consistently score 720+ and that training will take time. Two months would likely be too short of a time period for that type of Goal (you will likely need at least another 3 months of consistent, guided study), but we won't know for sure until we have some more data to work with (meaning that taking another CAT/mock in the next 1-2 weeks should help to define how well your current way of studying is helping you to improve).
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:
1) How long have you studied? How many hours do you typically study each week?
2) What study materials have you used so far?
3) 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
Contact Rich at: [email protected]www.empowergmat.com