Website to know about books something similar to IMDB for movies? is an old question. It has a couple issues: as noted in a comment (from 2012) it's a list question, but, perhaps more significantly, it seems to be a question about reading, not about writing. I was going to mod-close it but then I noticed its age. Why hasn't this been closed already? Is there a reason it should be open?
I don't see how this question has anything to do with writing. Please close.
(List questions should be allowed, in my opinion.)
Ignoring the "list question" aspect and the reading-specific nature of the question as originally posted, questions about readers' perceptions of books do (I think) have a place at Writers SE, mainly for marketing-related aspects (what is popular, what expectations readers have, etc.). That is, I think a valid question for Writers might be extractable from the question (though such an edit would do so much violence to the question that I suspect a different question might be better — aside from the benefit of closing a clearly off-topic question).
A writer might even use ratings and reviews to guide certain writing decisions (i.e., not just post-production marketing decisions).
I suspect that answers to such a question would also point out that better methods are available for making such decisions.
Yes, I find some pleasure in thinking of ways that a question can be rescued. In this case, I think any rescue would so violate the original poster's intent that it would be inappropriate.