Hey.

If you are already pursuing your Undergraduation, then you cannot give CLAT. CLAT is an entrance test for admission into NLUs for a  5 year integrated law courses which combine your undergraduate degree and LLB like BA LLb, Bcom LLb, BBA LLb etc.

If you are pursuing your Undergraduation and now you want to further pursue law, then you can go for a 3 year LLb degree. And CLAT does not offer admission to any 3 year llb degrees, it only offers 5 year Integrated courses.

So you can take entrances for admission into  various universities/ institutes which offer 3 year law degrees like Delhi University, Panjab University, BHU, GLC Mumbai, ILS Pune, Symbiosis Law School, Jindal Global Law School, IIT Kharagput etc. All these institutes have their separate entrances and procedure for admissions.

Best of luck