Hello student cut off vary every year on various factors like level of question in examination seats available and total number of applicants in the entrance examination.

I'm sorry to inform you but with 156 marks it's difficult to get admission in Allahabad university, as cut off for General Category is 190.

If you're from reserved category sc/st the cut off is 160.

For more details refer to the link mentioned below -

https://www.google.com/amp/s/law.careers360.com/articles/lfat-cutoff/amp

Feel free to comment if you've any doubt

Good luck