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Microsoft Teams has its own Powerhell Module. Please see the article on connecting to Azure/Office365.

Once connect to Microsoft Teams, you have a few options:

See all Teams:

get-teams

See all Teams a user is a member of:

get-teams -user This e-mail address is being protected from spambots. You need JavaScript enabled to view it

NOTES:
https://docs.microsoft.com/en-us/powershell/module/teams/?view=teams-ps