If only silence is recorded you may need to grant Resolve permission to access the device: Windows: Start Menu > Settings > Privacy > Microphone macOS: System Preferences > Security & Privacy > Privacy > Microphone
You have to switch to the Fairlight page to record VO.
****************************************** MacBook Pro Apple M3 CPU - 16GB Mac OS 14.3 DaVinci Resolve Studio 18.6.4 ******************************************