Hello Buddy! Hope you're doing good.

With 390 marks your expected percentile will be approximately 86.52 - 87.02 and your expected rank will be in range of 207002 - 247152 (General Candidate). Although it is expected rank, actual rank may differ from it. As you belong to OBC category, with this rank your chances of getting admission through all India quota are high. For getting your possibility of admission in colleges you can use the NEET College Predictor tool given below :-

https://medicine.careers360.com/neet-college-predictor?utm_source=qna&utm_medium=neet_cp

Hope this will help you.

ALL THE BEST! WORK HARD !!