hey anshu 

age eligibilty of neet is that you must be of 17 year of age on or before 31 december of the yyear of you admission to the first year of mbbs or bds. so you will be eligible to get admission in medical college. and with 580 makrs i think you can get governemnt medical college. 

visit following link to predict college https://medicine.careers360.com/neet-college-predictor?icn=neet_clgpd_landing_page&ici=clevertap-sticky-web 

goodluck