It depends on the country/state. In Aus there is no Australian qualification but each state has their own qualification and you need to study few subjects and sit for an exam. Same with US. In UK there is Solicitors and Barrister distinction . You need to do an exam and also experience , both cost money! But if you have a degree that will be accepted in most of the countries .
most of commonwealth countries accept the qualification but you need to do an exam with some exceptions. US states have different bar exams , but they also accept ours.
So it is difficult to generalize. So you need to directly deal with the country and its admission authority before you make plans. In sri lanka admission to profession of law is from council of legal education. In medicine it is Medical Council. Other professions also have their own admission authorities eg Chartered Accountants SL, ...