The cut-off scores for the SGPGI Lucknow Nursing Officer exam are OBC NCL (50/100), SC/ST/PWD (45/100), and General (50/100). It is important for students to familiarize themselves with these scores and aim to score higher. The cut-off scores determine the minimum scores required to pass the exam and can have an impact on a student's eligibility for further stages of the recruitment process.