how to score increse in english

Hi Karthik
You first need to figure out your strengths and weaknesses. You need to understand that which topic in English is pulling down your scores. If it is RC then you have read regularly and take more mock tests to improve your accuracy. If the problem is with grammar questions then you have to go through the rules from some good book.
Hence before you start looking for the solution, you need to undertstand the problem areas. Hope that helps.
Thanks