The National Eligibility cum Entrance Test (Undergraduate) (or NEET (UG)), formerly the All India Pre-Medical Test (AIPMT), is an entrance examination in India for students who wish to study undergraduate medical courses (MBBS) and dental courses (BDS) in government or private medical and dental colleges in India.

There are a total of 180 questions asked in the exam, 45 questions each from Physics and Chemistry, 90 questions from Biology. Each correct response fetches 4 marks and each incorrect response gets -1 negative marking. The exam duration is 3 hours (180mins). The exam is of 720 marks (maximum marks).

You'll get an AIR after the completion of the examination process, which will eventually fetch you a college based on your performance.

Here's the full syllabus for your reference:
https://medicine.careers360.com/articles/neet-syllabus