According to the official notification http://bsf.nic.in/doc/misc/Allocation1.pdf there are 15 MBBS seats and 03 BDS seats allotted under BSF Quota. Once NEET results have been declared, the concerned department will also release application forms for wards applying under BSF quota. So you need to apply for the same. The admission is based through All India Counselling through a separate merit list. So you need to appear for NEET and once the results have been declared, you need to wait for the official notification regarding allocation of seats for wards of CRPF personnel. Eligible Candidates need to apply for the same. The official website would be: http://bsf.nic.in/