Is PGIMS Rohtak good for the USMLE? Are there any students preparing for the USMLE at PGIMS Rohtak?

A medical college plays no role in your USMLE preparation. You have to chalk out the resources that work best for you and study with dedication. Focusing on your basics is important for your USMLE. 

As far as PGIMS Rohtak is concerned, it is a reputed medical college. Students from this college have cleared their USMLE in the past. You’ll get good mentors at PGIMS. 

But even students from lesser-known colleges clear their USMLE and secure a residency in the US. Some don’t even have any seniors for guidance. However, even without good mentors, the internet is always at one's disposal. 

So basically, your effort alone will decide your USMLE success or failure.