Dharavath your query is incomplete. You need to mention properly what you want to ask and as far as I can understand if you want to estimate your rank in the ST category then you need to tell us how much marks are you expecting in the JEE Advanced exam. You need to comment below about your marks so that I can help you in estimating your ST category rank or else if you are looking for some other answer the mention that in the comment clearly with all the stats required.

Feel free to ask if you have any more queries. All the best!!