If you have a graduation, then you are eligible to pursue a 3-year LLB course. There is usually no age limit to do that. However, just check the minimum required percentage as per the eligibility criteria prescribed by the college in which you wish to apply.

There are several 3-year LLB entrance exams in which you can appear such as SLS AIAT , TS LAWCET , NLSAT , KLEE , MH CET LAW , and AP LAWCET .  After obtaining a valid score you must participate in the counselling and seat allotment process of these exams.

There is no age bar to apply for law Entrance Exam. If you have completed Graduation then you can apply for three years law program.

There are many Universities offer this program. Any particular university you want to take the admission.

Good Luck!