Yes. Target stocks graphic novels among its wide range of products. It may not have as extensive a collection as a dedicated comic book store, but there's still a good variety. You might find graphic novels for different age groups, from kids' ones like 'Dog Man' to more mature-themed ones for adults, all neatly arranged on the shelves.
Yes, some Walgreens stores may sell a small selection of novels, usually best - sellers or popular paperback books. However, it's not their main product line, so the variety might be limited compared to a dedicated bookstore.
Yes, Artscroll does sell novels. They have a wide range of literature including religious novels and stories that are often based on Jewish teachings and heritage.