In 2019, under State Quota, 519 marks secured a seat in KPMC, under General Category. You haven't mentioned your Category. If you belong to General Category, then with this score, you will get a Management Quota seat and if you belong to Reserved Categories, you do have decent chances for a seat in Government Quota. The fees and caution deposit is different for each type of seat. So please check their 2019 brochure: https://www.kpcmedicalcollege.org/userfiles/UG-admission19-20.pdf. They haven't uploaded their 2020-21 brochure yet.