Is it worth it to take AIIMS Nagpur? If yes then why?

The worth mostly depends on the students more than anything else. AIIMS Nagpur is being run from their temporary campus, shifting to the main campus will take some time.

AIIMS as a brand is really popular thus depending on its popularity you could take admission in this institution. It is suggested that you aim for AIIMS Delhi. 

You can definitely go for it, as it has a name among students and it will be beneficial for your career ahead. They have a good faculty with highly experienced members, their tuition fees are also moderate, thus AIIMS Nagpur will be a good choice for your future.