Determine what aspect of the shop you need to photograph. I think some different approaches can be used to photograph the shop. Do you need to show the shop itself as the subject, ie: the building, its features and its location. Do you need to photograph the interior of the shop, ie: the layout, how products are arranged, fittings and fixtures, other architectural features. Do you need to photograph the shop experience, ie: how customers use the shop, the interaction of customers and employees, specific products in the shop, the shop's specialty.
There are very likely very many other themes you or your client could come up with, as other more experienced members here.
As you probably know, each theme is really a different job, each possibly needing a slight adjustment to equipment selection, but certainly each needing a different approach to composition and presentation. Ask your client what he has in mind and together work out a shooting program with him helping you with the concept while you are solely responsible for the photographic technicalities.