Is there a way to actively listen for any bluetooth data?

For context, I'm making an RC car controller and it's all done. I just need a way for the
RC car to tell the app its battery percentage. I know how to send and receive the signal but I just need a way for the app to listen to any Bluetooth signal and interpret it.

The RC car actively spams its data. I just need a kind of a loop that goes on forever and just receives bluetooth signal from the RC car and edit the label.

First time with the app, sorry if I look stupid

EDIT: I looked over some other post about receiving data from multiple sensors and there's an event "When BLEdevice.bytesreceived". My device isn't BLE but is there a way to get the same functionality on a standard BL device (I got HC-05)