If you do searches like "great book club books" you will get lots of results! Also consider searching a bit more specifically. book club books about diversity, book club books about the environment, great poetry books for book clubs, best memoirs for book clubs, etc.
You can google this, too, but here are a list of a few major book awards (there are many, many more).
National Book Critics Circle Award
Some American Library Association Awards
Bellwether Prize (socially engaged fiction)
You can find plenty of reviews from readers on sites like Amazon or Good reads. But you can also find reviews by critics and even scholars using the Library search tool.
1) Search for "title of book in quotation marks". If a book has a very short title, you may need to add the author's last name (outside of the quoation marks).
2) After you hit search and to to the results page, look for the column on the left. Under Limit by Source Type, select Reviews.