As you want to get the details of will it be possible to join in B.Com course if I have failed in 2nd year PUC so here is the information of the same for you:

Firstly candidates must have passed 12th standard or equivalent.

Normally there is no entrance exam for this course. Most of the institutes insist that the candidates should have secured a minimum of 50%.

In the top ranking institutes the minimum score required is distinction. So you need to first complete 12th standard.

It is not possible to go for graduation without completing the same.

Make sure you select the course that interests you.