Hello vibhanshu!

First of all i would like to congratulate you for good performance in NEET 2019,  since you have scored 521 in general category 

As per previous year trends you have good chances of getting admission in St.Johns Medical College, Bangalore

Here we are providing previous year cutoff 

Percentile range as well as marks -

St Johns Medical ollege,Bangalore

2018  Cut-Off Marks

Category of the

candidates

Qualifying

percentile Range and marks 

Category.       Qualifying percentile.          Marks 

Unreserved.        50.                                  686-469

SC.                        40.                                 469-353

ST.                        40.                                  467-304

OBC.                    40.                                  469-466

This is the last year cutoff of at Johns medical college ,Though the cutoff varies little bit every year 

But as u have scored 521 marks ,so you can get the admission most probably 

Fir more details https://neetresultcounselling.in/st-johns-medical-college-bangalore/

Hope it helps