My neet pg rank 36888 OBC category , is there any Chance for CTVS 6YR IN DNB ?

At almost 37000 rank it is very unlikely that you are going to get the DNB ctvs 64 especially in some good institutions is most of them get usually filled up around 20000 rank at max but since you have the OBC reservation your cutoff can go down to nearly about what you have scored in your rank this year
However to have an exact idea about where you could stand, you could use the following college predictor
https://medicine.careers360.com/neet-pg-college-predictor