With a score of 552, your rank might be approximately between 19,000-22,000. This is an expected rank range: https://medicine.careers360.com/articles/neet-result-marks-vs-rank .With this score ideally, CMC Vellore should be a possibility. Once NEET results have been declared, CMC Vellore might publish its merit list based on the Registrations that it has received and the marks secured by each Candidate. But the counselling process is done by the State Authorities and CMC will not conduct admission on its own. CMC doesnt participate in All India Counselling and so while filling hte choices for State Registration, you should opt for CMC, Vellore.