At the Green Party national website the party policy towards the various campaigns is
The national Green Party is committed to maintaining a neutral stance towards those seeking our nomination.
Ballotpedia reports there are 15 candidates seeking the Green Party presidential nod. One noteworthy “candidate” listed at Ballotpedia is “Kanye Deez Nutz West”, so information there may be questionable.
The <a href="https://en.wikipedia.org/wiki/2020_Green_Party_presidential_primaries#CandidatesWikipedia article</a about the Green Party presidential candidates lists the same seven candidates as the official list at the Green Party website, but includes two withdrawn candidates and two who have declined to be nominated.