The total delivery time for your order is the period of time from when you place your order until the time you receive it. It is comprised of two parts, the processing time and the shipping time.for an item is the time from when you submit your order to when the item leaves the warehouse. For most items, processing time is done electronically and usually completed within 1-2 business days for small parcel and 1-7 days for large items.
So it won't take too long.
You will need to wait for about a week after you order the pair of prescription eyeglasses at sams club. However, if you are in a hurry to use, you may call them and tell them your plan. Maybe they will do the quick processing. However, the eyeglasses you buy from the sams club will be good at the quality.
I never buy eyeglasses at sams club. If you order it online, it may require 3-4 weeks or even 7-10 working day. It just depends on where you located and what types of glasses you want. If you plan to buy regular single vision glasses, you may get it in a short time. But if you need bifocal or prism eyeglasses, it make need more time to make it.