See considering that your marks are 120 and your examination was held on 24th January, session 2, you will get a percentile above 95, however do note that this is an estimation and prediction and your actual result may vary.

You can refer to the following website for rank prediction:

Based on data from previous years, a score of 120 marks in the JEE Main January 2024 Session 2 would likely correspond to a percentile range between approximately 96.07 and 96.93. This estimation is derived from the JEE Main Marks vs Percentile vs Rank analysis provided by Careers360 refer here: engineering.careers360.com/articles/jee-main-marks-vs-percentile

lease note that these figures are approximate and can vary each year due to factors such as exam difficulty and candidate performance