Google has a few link attributes that allow you to tell Google not to pass any link signals from the link to the site you are linking to. There is the classic rel="nofollow" and the newer rel="ugc" and rel="sponsored". But no, there is no do follow or rel="follow" attribute.
Yes, sometimes SEOs will call a link that does not have any of the rel="nofollow" and the newer rel="ugc" and rel="sponsored" attributes on them a "do follow link," but no, Google does not say, this link has a rel="follow" on it, we must follow it. Google ignores an attribute that reads rel="follow".
So if you put a rel="nofollow" and a rel="follow" on the same link, then Google will ignore the rel="follow" and respect the rel="nofollow" directive.
John Mueller of Google confirmed this on Twitter saying "We don't use "follow" - it's ignored like any other unused attribute."
We don't use "follow" - it's ignored like any other unused attribute.
— 🍌 John 🍌 (@JohnMu) April 23, 2021
Forum discussion at Twitter.