Hello Monbikash. You mentioned you belong to OBC-NCL category and you have secured 89.68 percentile. With this percentile you are surely qualified for participation in All India Counselling as well as State Counselling processes. In fact, you are qualified for applying and attempting JEE Advanced too.

In 2020, the qualifying cutoff in JEE Main for OBC-NCL candidates was 72.8887969. So, you start jotting down the names of the colleges where you want to take admissions.

If you want to know your eligibility in various colleges based on your performance, feel free to use JEE Main 2021 College Predictor:

If you want to know more about cutoff trends in JEE Main refer to this article: https://engineering.careers360.com/articles/jee-main-cutoff

I hope you find this information helpful.

Thank you  and all the best for your future.