CAT

You have got fantastic score and you are surely eligible. You can also check alternate colleges with similar ranks below:
https://www.shiksha.com/mba/ranking/top-mba-colleges-india-accepting-gmat/2-2-0-0-310

Hi Monali,
In the month of October, you can get the application for CAT examination. The CAT exam is held in the month of November or December.
All the best.

I believe, basic mathematics is a must for MBA exams and later stage in life as a manager also. I would suggest you to practice and get acquainted with basic mathematics, and then think about doing MBA in IT in any college with decent placements. Without a decent score in exam will refrain you from a good college.

You need 70% in CAT .

You sure do. But aim for a higher percentile in the range of 99.6+ for getting a call & converting it .

Hi,
TIME, CL, IMS Learning, PT Education are some good known institutes for CAT exam preparation. You can check the below link for more coaching institutes for CAT –
https://www.shiksha.com/top-10-coaching-institutes-in-india-for-mba-entrance-preparation-article-11477-1

You can try in Balaji Institutes Pune, ITM Mumbai, Christ University Bangalore, Alliance University Bangalore or AIMS Bangalore with your score.