Hello Prashant,

Since the cutoffs for B.Com in Allahabad university has been released, with 136 marks in OBC category in B.Com entrance exam, it is unlikely you can get admission in AU. Here are the cutoffs for this year in general category -

Round 1 - around 185+

Round 2 -  174 and above

Round 3 - around 170+

More - https://university.careers360.com/articles/allahabad-university-cut-off