Hello Dear,

If you dont want to join Indian Army after completion of your course of B Sc Nursing then  The candidate shall have to refund the Bond money as per the Bond executed in the event of withdrawal from the Course, termination of training or refusal to accept Commission in the MNS, if offered. As on the the official website the amount is not mentioned but it depends on the day on which you left the course they use to calculate on daily basis. If you are not interested to join after completing 4 years of course then the bond amount will be around 15-20 Lakh Rs.  For more information you can visit the link:

https://medicine.careers360.com/exams/indian-army-bsc-nursing

Good Luck