Hi Aspirant

It depends on how much questions are correct and how much are wrong.For each correct answer you will get 4 marks and for each wrong answer your existing 1 mark will be deducted.

You can expect like this equation:

marks obtained=4 X (number of questions are correct)- 1 X (number of questions are wrong)

You can check previous year marks vs rank post by visiting the link given below.(you just need to copy and paste the link in new tab)

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

You can check the previous year cut off:

https://engineering.careers360.com/articles/jee-main-cutoff

We have rank predictor and college predictor which might be useful to you.

https://engineering.careers360.com/jee-main-rank-predictor

https://engineering.careers360.com/jee-main-college-predictor

All the best.