Stores are virtual locations that contain all data corresponding to a real store. A store would contain information like location, timings, and menu. On any aggregator platform, you can see stores of multiple brands based on your location.
The same-store can be listed on multiple aggregator platforms. Information configured on a store level would apply to all platforms corresponding to the store. A store listed on each platform would be considered a unit. For example, let's consider the brand: KFC and store: Indiranagar. Suppose this outlet is listed on Swiggy, Zomato the store would be considered as having 3 units.