Do you mean that you would like to export user information from a particular Teams meeting session? If so, for current Graph API options, there is one function in preview, which is the same as the call history tab in the Teams admin center.
GET https://graph.microsoft.com/beta/communications/callRecords/{id}
https://learn.microsoft.com/en-us/graph/api/callrecords-callrecord-get?view=graph-rest-beta&tabs=http
The basic details return participants information like User ID, Display Name and tenantID.
Here is full details example to get attendee Ips under “media” property.
https://learn.microsoft.com/en-us/graph/api/callrecords-callrecord-get?view=graph-rest-beta&tabs=http#example-2-get-full-details
For more information, refer Roadmap item for a “meeting attendance download report” to be made available hopefully by end of CY20 Quarter 2.
https://www.microsoft.com/en-us/microsoft-365/roadmap?filters=Microsoft%20Teams%2CIn%20development%2CRolling%20out%2CLaunched&searchterms=63351