In general, there are several interpretations in which a shop is a main theme. Most of the time, the interpretation is positive in meaning.
If you simply dream that you have spent some time in a shop in the dream it means that you will soon arrange a successful and lucrative trade deal. The whole arrangement will go smoothly and without any issues. This is especially true if you were in a positive mood during the dream and if you had the dream in the early morning hours of the night.
If you had dreamt that you were a shop clerk it means that you will soon have to deal with a lot of small chores in your home. The sheer amount of work that will be expected from you might make you a bit concerned.
A dream in which you were buying something from shop can have a variable meaning. If the transaction process went smoothly it means you can expect that things will move in a positive manner at your workplace within the next few months. If there was some dispute during the transaction it means that in the next few months someone will challenge your achievements in the professional life.
Looking through a shop window in the dream can be interpreted as you having some unfulfilled desire for personal closeness with someone. Alternatively, this dream can be considered to indicate a need for a heart to heart talk with someone. In other words you might have a lot to tell to another person even if they are completely unaware of that.
If you dream that you were a shop manager it means that you have solid ambitions in your professional life. You might have plans for well into the future and you are likely keen on following them closely. A dream like this one also indicates that the time is right for undertaking large projects in your personal life.