It is typically saved to your Downloads folder.
Under Zoom Client for Meetings, click Download.Click the lock icon again to prevent any further changes.Note: For Mac High Sierra (10.13.x), you will need to click on Allow too.Change Allow apps downloaded from: to App Store and identified developers.Enter your computer administrator's username and password.Click the lock icon at the bottom left to have access to make changes.Click on the Apple Icon at the top left corner of your screen.
To install Zoom or Zoom Rooms on your Mac computer, you may need to change your Security and Privacy settings to allow for apps downloaded from identified developers. The below instructions cover installing the Zoom application on macOS.