Hi @RamboA,
this should be possible when you login to your Webex Site (https://<Your-Site-ID>.webex.com) and then click on Calendar -> Completed.

Here you will find a list of all meetings and webinars (events). When you click on a specific meeting / webinar you have the ability to export the attendance report.

In the downloaded CSV file you will the name and email address of the attendees.
Best regards,
Igor