More than 100 registrants

Regardless of how many have registered for a session, you are limited by the maximum capacity of that meeting. Once you've reached that capacity, anyone else that attempts to join will see a message similar to this: 

This screenshot is a bit out-of-date, but should be fairly accurate. 

Hope that helps and please make sure to mark the solution as accepted if this information is what you needed.

Hi. Could I please check.

I have 100 capacity meeting. I will be livestreaming to Facebook. When the meeting capacity is reached will the users who try enter see a link to the livestream?

I can't find a direct answer on Zoom. They just refer to webinars having this function.