Hello Katigi. I hope you are preparing well for NEET UG 2021 and you are in good health as well. You mentioned you belong to ST category. In 2020 , All India Closing Rank for getting admission at AIIMS Delhi for ST candidates was 2239 via NEET All India Counselling (conducted by MCC).

So, if you secure 620 out of 720, your rank will lie within 13477 - 15627 while your corresponding percentile will be 98.93 - 99.43 . Based on the data given, it will be less likely for you to get chance for MBBS in AIIMS Delhi. If you want to get a seat at AIIMS Delhi, you have to score 650+ positively.

I hope you have got an overall idea about the eligibility criteria. If you want to know more visit this link: https://www.careers360.com/university/all-india-institute-of-medical-sciences-new-delhi/cut-off

If you want to predict your rank based on your marks secured then use NEET UG 2021 Rank Predictor:

If you want to know your eligibility for various medical colleges based on your percentile or rank, feel free to use NEET UG 2021 College Predictor:

https://medicine.careers360.com/neet-college-predictor

I wish you all the best for your exam and bright future.

Thank You.