It's a bit surreal to have to say this, but please don't rate fics in public bookmarks on ao3. If you need to, you can do that in the private bookmarks, but I'm so sick of people treating fics like this. It's always the people who never comment as well.
Don't get me wrong, I totally get leaving 10/10, 20/10 and so on, it's cute way to show you loved the story, but imagine you're an author that poured so much free time, blood and sweat into working on a fic and the only thing you get is a '3/10' '5/10'. Or even 'mediocre. 6/10'.
Have a little compassion for how nerve wrecking it's to share your work (and for free!). For how we desperatly wait for any comment or nice interaction only to receive numbers like this like a punch to the face.
If you need to treat fics like this, do it in private bookmarks, not where the author - but also everyone else - can see.