https://wiki.dfrobot.com/FireBeetle_ESP32_IOT_Microcontroller(V3.0)__Supports_Wi-Fi_&_Bluetooth__SKU__DFR0478

The output voltage of the pin VCC is equal to power source's voltage. (Output USB voltage when powered by USB, output battery voltage under 3.7V lipo battery input)The VCC port usually is not used as the power supply port of the mainboard. If you have to use that port to power the mainboard, then the battery input pin should be left floating.

I think the battery can only be charged through the USB interface.

If you supply power to esp32 through VCC, you cannot connect VB and usbvcc.