Hello Shivani. There are plenty of Colleges in Agra which offers B.Sc Nursing. Sarojini Naidu Medical College is one of the best and oldest Medical school in india. You can  try for SNMC.

Some other top colleges in Agra for B.Sc Nursing are enlisted below 

G.G School of Nursing and Paramedical- Affiliated to Chhatarpati Sahu ji Maharaj University.

Dr. Tondon Nursing College

Dev School of Nursing

Shanti Mangalick Hospital 

SSG Paramedical College

Pushpanjali Institute Of Nursing

Hope it helps.

Good Luck