Thanks JSWolf for the info.
So, here is the link to the "Home" page of the book listing.
https://iheartsapphfic.com/all-categories/ . Once on a specific book's page, you can see the tags that I was hoping to be able to scan and add to the metadata in Calibre. I was hoping to try it on this website as well:
https://thelesbianreview.com/
I don't know if it's possible or not.
Thanks for any advice you can give.