Hello Aryan ,
As you have completed your class 12th and want to take admission in B.com ,I could help you out with the admission procedure but I could have helped you in details if you would have said the name of the college in which you wanted to join.Still the admission procedure for bcom will totally based on the College in which you're interested or in which you wanted to join .Some of the colleges conduct entrance test for admission whereas most of the colleges give admission based on the merit of your 10+2 level exam .Hope this information is helpful and good luck.