What are the courses available after NEET

Admission to undergraduate MBBS and BDS courses in government and private colleges will be made on the basis of your rank in NEET exam. You have cleared the NEET examination but you couldn't get any seat in MBBS. You can try in the Dental colleges if you have an interest. It will be also allotted based on your NEET rank only. If you have not cleared NEET you can't join in BDS also. But you have mentioned that you are qualified in NEET. That is why I am suggesting that.
If you are not able to get a seat in BDS, NEET rank is not useful to you for any other courses.
You can Join in B V Sc or B.Sc ( Agriculture). The selection for these courses will not be on the basis of NEET. The many States conduct entrance tests for this. You have to get qualified in that examination. If you have not attended there is no scope. But there are some universities who allot the sears based on your Inter marks. You can search for such universities.
Otherwise, you can join in B.Sc or BA courses. After completing these courses you can try for PG or BEd or other similar courses. These days many IT companies are offering posts to B Sc candidates also based on B.Sc marks with a starting salary of about Rs.15000/- per month.

You appeared in NEET but could not get admission in a medical college. Do not feel discouraged or let down. That is not the end of the story. It is only a beginning.

There are many options for further studies for you for carving out a career subsequently. Some of these are as follows -

1. Bachelor of Pharmacy - You can try to get admission in B.Pharma. (4 years) and subsequently go for M.Phama. (2 years) after which there are good job potentials in pharmaceutical industry. If your score is good you can even apply for lecturer in Pharmacy colleges. In some of the Govt departments like Drug control, Govt hospitals, Research centres etc such pharmacy qualified people are appointed in different positions related to Pharmacy.

2. B. Sc. - This is the normal course of action for many students after 10+2 and there are many good subjects out of which one can choose as per ones liking and complete this undergraduate course. After this one can do M.Sc. also in the same subject and go for PhD if one has interest in research. After that one can try for a lecturer job in a college or university. Some of the good and prospective courses which can be pursued in B.Sc. are - Biochemistry, Environmental Science, Biotechnology, Occupational Therapy, Bioinformatics, Anthropology, Microbiology, Forensic Science, Agriculture, Pathology, Genetics, Health Science and Nutrition etc. After completing B.Sc. one is eligible to appear in various competitive exams in our country like State / Central administrative services, Subordinate services, Railway services, Executives in PSUs etc. After B.Sc. one has option to go for B.Ed. also and after completing it one is eligible to apply for teaching positions in schools/ colleges.

3. Management Courses - Even after doing 10+2 with Biology stream one is eligible to do management courses. If you have interest in management line then there are some courses like BBA (Bachelor of Business Administration), BMS (Bachelor of Management Studies), Integrated (BBA + MBA), BHM (Bachelor of Hotel Management) etc. after which there are many job positions in the industries.

4. Law Courses - Do not think that law courses are not your cup of tea. There is a steady demand of law persons in the industries in todays environment. A degree of LLB from a good institution can give the necessary push to you in this carer line.