When the gig states something like "Anywhere in..." then it means that it does not need to be completed at a specific location.
These can be set up a few ways. If it says "Anywhere in USA" or "Anywhere in ..." and then lists a city or state, then the gig may even be able to be completed from your home (read the gig instructions to be sure).
If it says "Anywhere in [Retailer], [State]" then you can visit any location of that Retailer inside the specified state.
For "Anywhere gigs", there are frequently a high volume of applicants, so be aware that does decrease your chances of being selected.