@alainamartin @Andres @Jerry "there" is technically here.
Whenever you create an account on a Peertube instance, you'll get a username that looks like @username@website.com and anyone could take that full username and put it into a Fediverse instance search bar and the profile will show up. However, for content to start flowing, a follow relationship between accounts has to be made somewhere first.
So if you want to see peertube content from a specific creator, you type their peertube username,like I listed above, in the mastodon search bar and then follow them.
Then, any future videos will come through on your home timeline.
However, if content isn't "pulled" you should be able to input a direct peertube video link into the search bar as well, pulling the content directly to you.