“Looking shop” isn’t a common phrase. It might mean: 1. A store where people mostly look at items without buying. 2. A shop that’s visually appealing or well-decorated. 3. It could be specific to the book's context. If you can share the sentence, I can help more!

Dirty-looking means it looks like dirt.

That's an interesting question. The context would definitely help. Could you, please, share a full sentence or paragraph?

What book, which country is it written? Was it a typo?

Ah, I see, now that you gave the whole sentence. And adjective followed by certain verbs forms a sort of 'adjective phrase' (not sure what the real term is). Good looking = something looks good, like an attractive person. Foul smelling = something smells bad, like a dump. Pleasant sounding = something sound pleasant, like music that you like. Hopefully that gives you an idea of how these work.