Dear candidate......ho ho you're doing good..

Well basing upon your sc rank in JEE ADVANCED, you may hardly get any seat in IITs in core branches like mechanical engineering, electrical engineering, computer science engineering , etc. But still you can give it a try at the time of counseling since you're a SC candidate. You can also apply for colleges accepting JEE ADVANCED score like IISER PUNE, IISER THIRUVANTHAPURAM, IISER MOHALI, IIST TIRUVANTHAPURAM, IIPE VISAKAPATNAM, RGIPT BARELY, etc. at the time of counseling. Admission into NITs solely depends upon your JEE MAINS rank.

Hope this helps you. Feel free to ask your queries......

Best of luck:)