Does anyone have any idea of the highest possible score - "Toy store"

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In the new(ish) game of finding objects in Toystore, there has to be a maximum possible score - based on the time taken to find the set number of objects. Any idea what it might be? I dont think I'm that close to it but it would be nice to know what to aim for. Most of the games have lists of high scores but i haven't noticed one for this game.