Where we see marks of iit examination

Hello Aspirant

Firstly you should be qualified in jEE mains exam .
The minimum cutoff marks was  not released it was officially released by NTA. If you crossed the minimum category of cutoff then only you are eligible for the jEE advance.on the month of June this jEE advance exam is conducted. Results may be available on July.

If you get good score in jEE advance .you will get top IIT College seat . otherwise you will get low rating IIT college.

If you have any questions further let me know but once go through the below link for jEE advance eligibility criteria.
https://www.google.com/amp/s/engineering.careers360.com/articles/jee-advanced

Hope it helps you!!!