If you copy and paste a link from Safari into the Notes app, it is pasted as text that is also hyperlinked. However, I haven't been able to find a way to do this in the Notes app directly.
I've tried using markdown, for example:
However, it only made the part in the parentheses
www.google.com a hyperlink instead of just displaying
How can I hyperlink 'text' within a note in the macOS Notes app?