Sir I, Arijita have secured 503 marks, can I get chance in any govt. college throughout any Indian state? I belong to UR category.

Dear Arijitha, you havent mentioned your State.  Nevwrthless, 503 is quite a less score for General Category. It might get you a seat if you belong to  UP. But it is difficult in States like Delhi, Rajasthan, etc. Now you cannot hold a domicile of every State and Private Medical Colleges dont participate in All India Counselling. Your only chance might be management quota where the fees touches the sky. Do let us know your State and  so that we can lay down your options for you. You can also use our College Predictor services to check your options:
https://medicine.careers360.com/neet-college-predictor?utm_source=google-search&utm_medium=paid&utm_campaign=neet-clgpd