It differs too much from place to place. Even within the same retail chain - when I floated for Walgreen's between two districts, there would be stores where the four phones always all ring, and there are stores doing the same volume that hardly ever have phone ringing. And within community pharmacy depending on what the store makes the most money on and what draws people in, that will determine how much time is spent doing what. And depends on your position. A friend of mine works for a small privately owned pharmacy and her main job is diabetes education and MTM, she talks to patients most of the time and hardly does any verification/filling. Even excluding special situations like these, there are different policies from store to store and state to state and different staffing solutions - a pharmacist might be the primary person to ring patients up, with mandatory counseling. And in the hospital, your duties are very different if you work in the IV room vs. consultant pharmacist on a rounding team. And there are all the other settings.
As I said, it's just too varied. Any estimate I would try to make would only be true for a specific pharmacy.
