Walking Forward in Google Tour Creator
The simplest thing to do would be to simply shoot a video of it. Alternatively, you can use photography from inside the store to generate a photogrammetry model. Simply put, a program looks at a lot of images and stitches them together to a textured 3d-model. You could then walk through the 3d-space. Since you said that you are an amateur at this field, I would highly recommend just filming the motion, or hiring someone who does. All you'd need is a steadicam and a camera, obviously. From 2 or 3 images alone you cannot accomplish such a motion.