Congratulation on completing your graduation.
Yes you can apply for AILET after B.com (//B.com) as there's no upper age limit in AILET.But you can only apply for BALLB that is Undergraduate course and for PG like LLM you need to have a degree of L.LB from the institution recognized by BAR COUNCIL OF INDIA.
Hope This Helps
Wish You Luck!
AILET is available for both undergraduate and postgraduate programmes. For BA LLB, you must have completed your 10+2 or equivalent from a recognised Institute and score 50% in your 10+2. This 50% is same for General Category and Reserved categories also. There is no upper age limit for AILET 2020. But for Post Graduation prgoramme you need to have an LLB degree form an Institute recognised by the Bar CounCil of India. So you can apply for BA LLB but not for LLM through AILET 2020