Hello siddhant,

As per the JEE Main Eligibility, You should have obtained a minimum of 75% marks in class 12 or equivalent exam or they must be in the top 20 percentile in their class 12 examination. For SC/ ST, the eligibility is to obtain a minimum of 65% marks in class 12 or equivalent.

You can check the further eligibility to apply for the exam with the given below link.

https://engineering.careers360.com/articles/jee-main-eligibility-criteria

Good Luck!