Hi , in order to get a seat in bvsc you need to appear in NEET UG which is conducted once every year as NEET UG is the entrance exam for MBBS,BDS,AYUSH , VETERINARY etc.. The eligibility criteria is different for every category as NEET eligibility marks in 12th to be considered are aggregate marks only for PCB subjects which is
UR - 50%,
OBC/SC/ST - 40%,
PWD - 45%
So your rank is BVSC is entirely based on your marks scored in NEET exam . You have scored 50% of the total marks and your rank is not entirely based on your marks scored . It depends of various factors like  number of students appearing in exam, difficulty level of exam,
students scoring more than you and
your category.
It is too early to get to a conclusion . I'll suggest you to wait for result and then decide accordingly
To know more about neet eligibility click below
https://medicine.careers360.com/articles/neet-eligibility-criteria/amp
Hope this helps