Hello there,
The concerned authorities of JoSAA will release the JEE Main 2020 cutoff for top IITs in online mode. The IIT JEE Main cutoff 2020 will be made available to candidates in the form of opening and closing ranks. The cutoff is the minimum rank required to be eligible for admission.
The highest salary for IIT Kharagpur students was 1 crore per annum and the average salary is 10-15 lakhs per annum. Similarly for other IITs the packages are very good.
You can visit the following link for more details
https://www.careers360.com/

May this helps you. Good luck may you achieve your goals.