Should I first take clinical licensing exams like AMC or PLAB before deciding on a country or non-clinical courses in UK/Australia for a Master's?

No, you do not need to take clinical licensing exams like AMC (Australia) or PLAB (UK) before deciding on a country or choosing non-clinical courses. These exams are only required if you plan to practice medicine clinically in those countries after your medical degree.

If you are interested in non-clinical master's courses or switching fields, you can choose your country and program first. Clinical licensing exams can be considered later if you decide to practice medicine abroad.