Right click on the camera window, chose "camera settings" Then, if your BI version is 5.5.3 or later (Nov. 16, 2021), "a Copy button has been added to the camera settings page to facilitate the quick replication of settings between profiles and cameras."
The above was found by opening BI's built-in "Help" file then using <Control> + "F" key , bringing up the "Find" function then searching for "copy."