Law is one of the popular career choice now a days. A degree in law not only lets you practise as a lawyer in the courts but it also opens your career options in the sector like corporate management, legal services and administrative services, defense, Tax, department.
After having three years law programme There are many options you can opt:

You can apply for AIBE exam to practice legal profession in India. Or You can apply for Indian judicial Services Exam (IJS) exam to become a Judge.

If you are interested to be a professor then you can go for LLM after that PHD.

To get information about AIBE more you can go through with given below link.

AIBE

Good Luck!