Hii!
You can either get into BSC nursing through NEET UG entrance exam or by the separate entrance exam conducted by a particular college or university providing the course. The dates may differ in that case, so you need to provide us the name of the institute, in this case. NEET application forms are not out yet, but will be out soon.
Also, for army bsc nursing, the application form process ended on 10 March, 2021.
Hope you understand.
Good luck!