You can get into NLSIU Bangalore by taking the CLAT examination. There are no age restrictions, it depends on the level of education and accordingly, you can apply for either a UG or PG program.
Apart from this, you can choose some distance learning courses like MPP (Masters in Public Policy). It is an interdisciplinary program that provides comprehensive training and various other courses depending on your interests.
You can also go for Online & Hybrid Programmes as there are various PG Diploma courses available in Human Rights, Medical & Ethics, Environmental Law, and many more.
Your age will not affect your job opportunities after completing the course. But it will be best if you have any prior experience or qualifications added to your profile.