Himalayan University

Hi Amit,
For course fee details, it would be advisable that you get in touch with college authorities directly.
Please visit this link for more information on this:
https://www.himalayanuniversity.com/contact-us.php

Yes, you can register yourself as a practitioner.
Please refer to the link for details: http://ayush.gov.in/acts-rules-and-notifications/guidelines-registration-naturopathy-practitioners-and-accreditation-institutions

As per thier website, Himalayan University is recognized by the UGC - University Grants Commission under Section - 2(f) of the UGC Act, 1956 and hence empowered to impart higher education at all different levels of Under-Graduate and Post-Graduate. Himalayan University is included in the list of approved universities in India listed by UGC Approved Universities. Therefore, degrees awarded by University is valid for Government and Private sector jobs.

Himalayan University is UGC accredited. However, it is relatively a new university and will take some time to establish itself. If you want to pursue a course through distance, you should be okay.

HNB University is a central government university. In my point of view, you can opt for it.