My AIR is 21380 in NEET 2019. I have a domicile of Uttar Pradesh. I have UR category. Can I get admission in mbbs in government college?

You havent mentioned your score. Neverthless, in 2018, under State Quota, 469 marks secured a rank of 4362 and secured a sat in Dr. Ram Manohar Lohiya Medical College under General Category. With your rank, you might have a chance at a Private Medical College. If you cam help us with your score, we can lay out your options for you. Having said that, cut offs change every year and are dependant on various factors like no.of seats availble, no.of candidates appearing for the exam, top NEET score and difficulty of the exam. You can check the cut offs of various colleges at:
https://medicine.careers360.com/articles/neet-cutoff-up

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