Hello!
So I wanted to create a website that recommends fiction books to people according to their taste, so a database of books, and people can put filters to find the books they may enjoy, like “adolescent”, “fiction” “manga”, etc. The closest template I found to get started was a book store template. Thus, I was wondering how to remove the “put into cart” option when the person clicks on a book in the database to look at the summary of the book.(because it is not a store, after all)
Thank you 
So look at removing Wix Stores from the template and make up your own version for this where the user can choose a book and look at the summary for it.
You can create dynamic pages for this so that you only have to create the one page and then have all the books use the same page etc.
You can also show all your books in a repeater if you have the cover images for them all etc, with a short description on it as well.
This repeater could simply be connected to your dataset and the user can filter it to show only a specific book category.
https://support.wix.com/en/article/about-repeaters
https://support.wix.com/en/article/dynamic-page-example
Corvid by Wix | How to Create a Dynamic Item Page and Index Page
https://support.wix.com/en/article/adding-and-setting-up-a-dynamic-category-page
https://support.wix.com/en/article/creating-an-index-page-for-your-dynamic-pages