Hello, Ravinder. I hope you have performed well in JEE Main and I wish you all the best for your future and career. If you are qualified in JEE Mains 2021 then you can SURELY get chance to appear in the counselling processes of IISc Bangalore. You need to appear and obtain valid scores in any of the national level entrance examination apart from KVPY (like JEE Main, JEE Advanced, NEET-UG). If you secure valid rank then you will get opportunity to fill up the online application form for counselling procedures of IISc, Bangalore. The final selection  will be made based on your performance in JEE Main, document verification and payment of the fees.

If you want to know cut-off marks from previous year follow this link: https://engineering.careers360.com/articles/iisc-bs-admission

To know more about the institute, visit this link: https://www.careers360.com/university/indian-institute-of-science-bangalore

I hope this information is enough for you to clear your doubts.

Thank You.