On the opening screen of BF there is a list of drivers that you need to install. Have you done that? Also, try a different usb cable, some don’t carry data, only current for charging devices!
Once in BF, you need to do several things.
Select either SBUS or PPM from the configuration page.
If sbus you need to select a UART port on the Ports tab first.
You need to setup the modes on the modes tab.
On the receiver tab, you need to select which receiver type you are using. AETR, TAER etc.
Once this has been done, you should be able to arm the quad.