I have got 80 percentile in neet 2019 is there any chance to get admission for bams in government colleges
Your admission in any medical College will be based on your AIR and marks secured. You didn't mention these in the question and also your category. So your percentile won't matter in the counsellings. A minimum of 50 percentile is required for qualifying the NEET exam but that doesn't guarantee you that you will get a seat in medical colleges. And the cut off marks are really high this year for all the courses.
Thanks and best wishes