Hi Christine,
Nice to meet you! My name is Randy and I'm an independent advisor.
Emails sent to a Microsoft Teams group go to the Microsoft 365 Group mailbox, not the "Files" tab in Teams. To find them, open Outlook (desktop or web) and check under Groups in the left pane for the matching Team. If you’d like those emails to also appear in members’ individual inboxes, the group owner can enable this in Outlook by going to Manage Group > Settings > Send all group conversations and events to members’ inboxes.
Hope that this helps.
Kind regards,