Hello aspirant.

As you have scored 78.3 percentile in Jee mains examination , and for general ews category cutoff score in Jee mains examination is 78.21 percentile.

As your score is more than cutoff score, you are eligible to write jee advanced examination.

To predict college that you get based on your score refer

https://engineering.careers360.com/jee-main-college-predictor

All the best.