Where did you expect them to show up?
If you configure the option below in your privacy settings, the ratings/reviews you make will show up here https://itch.io/feed?filter=ratings and in any of your follower's feed.
Privacy
Control how itch.io displays your activity.
( ) Make my public activity on itch.io visible to my followers and other users of the site
Public activity includes things like adding games to a public collection, publishing a game, submitting to a jam, rating a public game.