Dear aspirant!

Hope you are doing well !

Before 2-3 years one of mine friend got the same marks around 50 ,he told me this thing after the exam in first attempt ,and he got around 80 percentile but remember one thing ,the competition will be increased in the second attempt ,you will get lesser percentile at same marks in the second attempt. However as you are from St category your rank will be better . You can predict your rank by visiting the link given below :-

https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://engineering.careers360.com/jee-main-rank-predictor&ved=2ahUKEwjRw5PL2IWEAxUObvUHHaR7Az8QFnoECBcQAQ&usg=AOvVaw2QNQ0E4U1hgytKWWo9jfZm .

Hope it helps you !!

Thanking you !