As per the official website, the College of Nursing at SGPGIMS Lucknow offers a 4 year BSc. in Nursing, the admission to which is based on an All India Entrance Test conducted by the college.
Thus, there is no provision for direct admission into BSc. Nursing at the university.
You can check other details on the BSc. Nursing program at SGPGIMS such as course details, etc.