IIT

IITs and NITs are mostly famous for engineering, tech, and science stuff, so they don't have courses like B Pharma or M Pharma.

That said, some IITs—like IIT Bombay and IIT Delhi—do offer programs in biomedical engineering or biotech, which touch on things related to pharma and drug development.

Yes, indeed.  JEE Advanced is only an entrance exam to determine if you can seek admission or not. But for actually getting admission, one definitely needs to pay prescribed fees for that particular course selected. Candidates need to pay the tuition fees in IITs applicable as well as other fees as indicated by the IITs at the time of admission. This fee will vary from IIT to IIT and the candidates will need to pay the fees during the JoSAA counselling.

A percentile of 68 in JEE Mains 2024 is really a bad chance for getting into any NIT or IIT because the cutoff ranks for the best colleges are always far lower than 68. Nevertheless, you will have a decent chance for getting admission to some of the lowest-ranked NITs or one of the new IITs, based on branch preference and competition. One would be advised to look for some other engineering college with less admission criteria or again appear for the JEE Mains in the next session in case of improved rank. Opening and closing ranks keep an eye in counseling.