The required educational qualification for LLB is 10+2 or Graduation. If you are pursuing BBA and you want to study LLB, you need to complete all the backlogs and then appear for LLB admission process. The eligibility criteria for appearing for LLB is you complete either your 10th or your Graduation with a minimum aggregate of 45-50% based on the entrance exam you are opting for. So, in other words, you need to complete BBA by the time of admission for LLB.