Well himanshi you have not mentioned any specific examination but from the info you provided i am assuming you got 503 in neet and want to know about which govt colleges you can get into under state quota with obc category if i am wrong pls correct me in the comment section acc to previous years cut off analysis your rank will lie between 17817 - 21337,below i have mentioned govt colleges you can get into with this rank :

• BPS Government Medical College for Women, Sonepat(cut off marks=496 , under BC-A)
• Shaheed Hasan Khan Mewati Government Medical College, Nalhar 494(cut off marks=494 , under BC-A)
• ESIC Faridabad(cut off marks=502 , under BC-A)
• Also for more analysis regarding which colleges you can get with above rank use the following tool https://medicine.careers360.com/neet-college-predictor