ashishmishra06
Hey i am targeting over 650
in the gmat official mocks i was scoring around 500 -540
On the GMAT my scores were V17 & Q38
OK, so, you still have a fair amount of work to do in both quant and verbal.
For quant, you need to just keep working on one topic at a time to basically drive your score up point by point.
To master on a quant topic, review or learn the relevant concepts and strategies and then practice answering questions involving that topic until you are getting a high percentage of them correct. Ideally you'd be getting 90+ percent of easy, 80+ percent of medium, and 60+ percent of hard questions correct by the time you are done with a topic. Also, it works best to start off practicing a topic untimed and achieve high accuracy and then, once you have achieve high accuracy, work on answering the questions at test pace.
By mastering one quant topic at a time in that way and achieving those practice accuracies, you'll eventually master the entire quant section.
Regarding verbal, you can work topic by topic in verbal as well. At the same time, there are some key things you need to understand in order to prepare for verbal effectively. So, I recommend reading the following post to learn how to prepare effectively for GMAT verbal.
How to Score High on GMAT Verbal