hello,

To become a full-time Alimah, you may join a course in your locality, or Online from a reputable institution. For advanced studies, refer to an Alimah course with Arabic grammar and intensive studies of Quran, Hadith and Fiqh. Search for a good Darul-Uloom institution for Alimah studies program near your town.

You need to complete a course named as darse nizami. In some countries it takes 8 years which usually requires that you have completed matriculation exams however some institutions are offering darse nizami in fast track and can be completed in 4 years.

hope that helps