Dear candidate, the percentile for everyone remains same, regardless of category he/she is. It is the rank which is created for different categories. At 137 marks, you will definitely get percentile above 97 and if your shift paper was tough then it may cross 98 percentile. Marks vs Percentile now depends on many factors like:

• Difficulty level of paper in your shift
  

• Number of students appearing(Students have decreased if compared to 2020)
  

• Number of seats in colleges this time.
  
  

For more details, you can check:

https://engineering.careers360.com/articles/jee-main-marks-vs-percentile

Hope, it helps!