Hi Nashima,
This forum helps HR professionals to share and enhance their knowledge and experience across various functions of HR domain.
Considering your HR experience and age, I wonder you should have known this information by self.
There are many job portals which updates all the government job openings. Please have a look at the below link, just for example.
https://www.sarkari-naukri.in/jobs-by-post/hr/
Also, I suggest you to track list of public sector companies (eg: NTPC, NMDC.. and so on) keep an eye on the career page to know about the details.
Please check on your own about the qualification, experience required and selection process.
Be prepared with HR processes.
It's not TOO late though!
Good luck
Regards
Thiyagu