About an anime figure shop in Tokyo : I would like you to correct this to more natural and English please.
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However, shops selling anime figures usually don't permit customers to take a picture of the displays and merchandise inside the shop. I found a kind shop that permit to do it.

There are several displays that have OK sign stickers to take a picture without asking.
This shop is one of the largest shops in Tokyo and has so many goods in stock.
If you want to buy figures, you shouldn't miss this shop. You will find your favorite one and can enjoy sightseeing in the shop.
聼起來自然嗎?

Very good

However, shops selling anime figures usually don't permit customers to take a picture of the displays and merchandise inside the shop. I found a kind shop that (permit) gives permission to do it. [permit is a noun, or alternatively you can use "allow"]

There are several displays that have OK sign stickers to take a picture without asking.
This shop is one of the largest shops in Tokyo and has so many goods in stock.
If you want to buy figures, you (shouldn't miss) don't want to miss [I think this would be the better choice of word for marketing purpose] this shop. You will find your favorite one and can enjoy sightseeing in the shop.