Hello Shivangi

Congratulations for your result.

Shivangi you have not mentioned your category.But the last year's cut off for BSC Mathematics for Allahabad University is:

General-137

OBC-119.5

Sc-93

ST-56

So if you're from ST category then you can get admission in Allahabad university main campus otherwise there is very less chance.

You can refer this link to check last year's cut off:

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

So I hope you find this helpful 

Thank you 

Good luck.