Uber uses Zoom to conduct video calls. Once your video call is scheduled, you'll be given a Meeting ID number. Once you have the Meeting ID number, at your scheduled time, use this link to join the Zoom call: https://zoom.us/join
It's not required, but you can download the program for Zoom before your scheduled call using the link below. If you do not download beforehand, don't worry. When joining or starting a meeting for the first time, your web browser will help you install the program.
Zoom Download Center: https://zoom.us/download#client_4meeting