* LL.M. programs are specialized: An LL.M. is a postgraduate law degree. Unlike a Juris Doctor (J.D.), which is a professional law degree requiring a rigorous, three-year commitment, an LL.M. is typically for students who already have a law degree (JD or equivalent from another country). You wouldn't typically pursue an LL.M. as your first graduate degree in law.
* You'll likely need to take pre-law courses: Before applying to an LL.M. program, you'll likely need to take some undergraduate pre-law coursework to show you have a foundation in legal concepts. This might include classes in constitutional law, contracts, torts, etc. The exact requirements will vary by the program.
* Some programs may consider a sociology background helpful: Depending on the specific LL.M. specialization (e.g., law and society, legal studies, criminology), your sociology background could be an asset. It could provide you with valuable research skills and theoretical perspectives relevant to certain legal areas.
In short, you can't directly transition from a sociology degree to an LL.M. You'd need to first get a J.D., then apply to an LL.M. program. Your sociology background could be helpful for specific LL.M. specializations, but it wouldn't replace the need for a J.D.