neet pg2019 AIQ rank is 6587.What rank will be in SC category?

It is difficult to state your category rank like this but it can be predicted in which college or stream you have greater chances of being admitted with your all India all state rank availing the SC quota reservation as you are stating all that cannot be clearly predicted what will be your category rank just based on your all India rank since there will be many applicants from your category who all scored rank above you in the generalized all India Neet PG rank which has been published
just to help your calls with the rank of 6500 availing the SC category you will get good opportunities in the fields of general medicine, orthopedics, general surgery and paediatric medicine since the cutoff rule of law especially in the mop up round and if you still want to accurately determine what your chances in the different rounds of counselling would be with your category in the colleges of your choice and the streams you would like you could use the following predictor link to aid your cause
https://medicine.careers360.com/neet-pg-college-predictor

You can download your rank card at the following website

https://nbe.edu.in/Result/Rank_Login.aspx

by entering details like roll no. And date of birth.