i have got EWS rank of 420 in aiims pg can i get seat?

Hello.
you have two options to predict your college on the basis of your rank in AIIMS one option is that you can go with the previous year cut off list where you will see the cutoff for all colleges which will give you a probable idea of having admission and another option is that you can go with the career 360 college predictor where according to your rank you can have some expected aiims colleges where your chances are high due to your rank.
Link of college predictor is given below.
https://medicine.careers360.com/aiims-mbbs-college-predictor
Best of luck.