As per the BITS PILANI official website:

The admission Fee is Rs. 39,800 & the fee for 1st semester is Rs. 1,78,000/- (This is only the sem fee and doesn't include hostel charges and other charges).

**The fee structure may vary. These are the figures for the session 2019-20.

You can follow the link provided below to know more about BITS PILANI fee structure:

https://www.bitsadmission.com/fdfee201920.aspx

BITS PILANI don't offer admission on the basis of JEE MAINS. In order to take admission in BITS PILANI you have to go for BITSAT.

To know more about BITSAT click on the link provided below:

https://www.careers360.com/exams/bitsat

I hope this answer helps. All the very best for your future endeavors!