Hello Aditya, 91 marks are good but it's not enough to get Computer science branch in top colleges like RV, Ramaiah, BMS, etc. 91 marks will and you somewhere around 11000-12000 rank. you can get good colleges like nitte Meenakshi, KLE Technological university and other good colleges. if you still want to enroll in top colleges then you can take admission through Management Quota but it will cost a huge amount of money.