Hello Aspirant. You mentioned you belong to SC category and expect to score 428 out of 720 in NEET UG 2021. Based on your marks, your overall percentile ends up around 89.61 - 90.11 and your AIR may end up somewhere around 156223 - 188373 considering difficulty of the paper to be moderate.

Based on your performance in NEET UG 2021, it is less likely for you to get admission at Public/Government medical colleges although  you may get chances to get admission to MBBS at few Private medical colleges in India via 15% AIQ such as:

1. Bharati Vidyapeeth DU Medical College And Hospital, Sangli
2. Shri Sathya Sai Medical College And Research Institute, Nellikuppam
3. MGM Medical College and Hospital, Aurangabad
4. Manipal College of Dental Sciences, Manipal
5. Maharishi Markandeshwar University, Mullana (BDS)
6. Saveetha Dental College, Chennai

and few more....

Apart from these, as per your expected marks, you have good chance to get admission to BDS at various Government dental colleges and at Private dental colleges under Government quota in Manipur. However, you have low chance to get chance to grab a seat at Government medical colleges in Manipur for MBBS.

To know more about the cutoff trends and admission procedures in Manipur for NEET UG based on previous years' data, consider referring to this article:

https://medicine.careers360.com/articles/manipur-mbbs-admission

To know more about NEET UG overall Cutoff trends, follow this article:

https://medicine.careers360.com/articles/neet-cut-off

Another thing worth mentioning is that you have good chances for Government medical colleges for AYUSH courses like BAMS, B.U.M.S, BHMS etc. in both  AYUSH All India Counselling and State Counselling.

To know your admission chances in medical/dental colleges with NEET Score, to get a personalized report with Top MBBS & B.D.S Colleges and to check course & counselling wise cut-offs of NEET for various state quotas, caste groups etc., I encourage you to use NEET UG 2021 College Predictor:

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

I hope you find this information helpful.

Thank you and all the very best!