Hiii

The AIIMS MBBS entrance exam is conducted by All India institute of medical Science, New Delhi, to provide admission to MBBS course in all the AIIMS institutes. The exam is supposed to be conducted on 25th and 26th of May in two shifts, in online mode.
The applications for the exam have started and are availble till 3rd january. You need to visit the official website and fill in the Basic Registration form so that you can be able to give the exam. Once your basic registration form will be accepted you will have to fill the final registration and pay the registration fees and then admit cards will be released for exam.

Here is a link that will provide you more details about AIIMS exam and preparation tips, syllabus etc.
https://medicine.careers360.com/articles/aiims-mbbs-2019

Thanks!!