FinKiin which extension are you referring to?
I believe FoF Gamification has an "Upvote" sort on the discussion list.
The bundled Flarum Likes extension is for liking posts, not discussions, so there's no easy way to sort discussions without additional logic to calculate some sort of score per discussion. Since FoF Gamification already exists for this use case, it's unlikely we would add this feature to the bundled extension.
Or are you referring to sorting posts by likes inside of a specific discussion?
