Twitch doesn’t have “likes”
View counts are abailable from the Get Streams API I already linked
Twitch is live stream only so “comments” only exist as “live chat” on a live stream.
You’d have to connect to and read fron chat in real time for chat.
This information is not available via a web hook
You create the WebHook callback URI, WebHooks are a URL on a server you control that a service will POST data to