These instructions are on how to find out the external or internet IP address for a Unifi AP Access Point which is connected to a Unifi Controller in a remote site without a USG as it doesn’t show this information in the Unifi Controller itself.
From the Unifi Controller click on the Unifi AP
Click on tools in the right hand pane then under Debug Terminal click on Open Terminal
Type the following in to the Terminal Windows that Opens
The Internet / External IP address is returned