's is the number of favorites.
To the right of that is the number of views.
The numbers of stars is the rating and number of people who rated your story.
To the right of that will be the number of people who left comments (only if there are any).
So for The London Fuck: 4 people favorited it, 11,875 viewed the story (at least the start anyway), 50 people rated the story and the overall rating is 4.12 (out of 5).