Many people move their refrigerator to clean behind it as part of spring cleaning. If you are doing this, be sure your first lay down a sheet of plywood and roll the refrigerator onto the plywood. This keeps you from tearing or indenting the vinyl.
Now is a good time to vacuum and thoroughly clean the floors. Do not use a vacuum with a beater bar. Be sure that the product you clean the floor with is the cleaner made by the manufacturer of the vinyl.
If the floor is showing wear, you can apply wax to bring back the shine. However, be sure you clean the floor thoroughly before waxing and be sure to use the wax made by the flooring manufacturer. Also, once you begin waxing a floor, remember that you will need to strip it before you wax it again.