Dear aspirant

You haven't mentioned any counseling name nevertheless if you had registered in round first of counselling process and didn't do choice filling then that's not a problem still you can participate in round second just login with your proper login credentials on counseling website and can participate in choice filling and locking process of round2. If your rank is sufficient enough to get College in round 2 then you will get alloted college based on your rank.

If you were asking about neet then

You can use our college predictor tool for predicting the best college at your marks and rank in your state. It is quite helpful for many students. Try it by visiting the link below

https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer

Hope I may have resolved your query

Best regards!!