Isaiah4031a, The zip code is listed. Being familiar with the areas by zip code is helpful. You can also try Googling the zip, along with a key word ~ 90210 restaurants, or car dealers, etc. After shopping with them and reading their job board a while, you will recognize which shops you want.
The dispatch number identifies the assignment. Other MSCs may call it assignment number or shop number. Yes, after being assigned a shop, you will be able to see the report and guidelines. This information may not be visible until a week before the due date. Some of their assignments require certification prior to conducting them. Also, after completing the on-site portion of the assignment, Bestmark requires that the shopper log in and confirm that portion as completed.