I scored 89.61% in mains and a category rank 4583 in sc quota which nits and cources in it do i get further

Hello Aspirant, Seeing your percentile, category and rank, it is a bit difficult for you to get admission into top 5 NITs. But you could definitely apply to NITs after the top 5. To see which NIT college is available for you, use our college predictor link given below to view the preferred college available,

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Also,  you can see the previous years cutoff trends of various NITs below,

https://engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches

After seeing the type of NIT that you might get , you can also see the courses offered by various NITs below,

https://engineering.careers360.com/colleges/list-of-top-nit-colleges-in-india

Hope that helps, Good luck