Creators, you'll still be able to see the exact number of likes and dislikes in YouTube Studio. For viewers, if you're in the experiment, you can still like or dislike a video to share feedback with creators and help tune the recommendations you see on YouTube.
— YouTube (@YouTube) March 30, 2021
In response to creator feedback around well-being and targeted dislike campaigns, we’re testing a few new designs that don’t show the public dislike count. If you’re part of this small experiment, you might spot one of these designs in the coming weeks (example below!).