Hi aspirant,

With 422 marks you have no chance to get government medical college in all India quota. You need to score minimum 600 plus marks for all India seat. This information is based on previous years cutoff and the cutoff marks change every year. It's depends upon number of students that appeared in examination, number of seats available in colleges, difficulties of question paper, etc. And this year cutoff goes very high. So more information you can use neet college predictor to know which college you may get with your marks. That is mentioned below:-

https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer

Hope this helpful. Best of luck.