Can I get admission in IIEST College for computer science engineering department with JELET OBC rank of 520?

Yes, you can get it according to the 2022 cutoff in 6th round, which is 6462 for OBC other state quota. But I can not give you 100% assurance as IIEST is now moving out from the dual degree course to 4 year B.Tech which results in considerable change in cutoffs. Anyways, all the best and you may get