So with binding you can typically get the transmitter bound to the receiver without needing the FC to be involved but you will need to hook up the FC to computer and use betaflight configurator to verify things are working correctly, for some instructions on binding procedure and configuring betaflight see:
The first thing you want to do when setting up a drone is binding the receiver and transmitter so you can control it. In this tutorial, I will show you how to bind a Frsky receiver to the Taranis or Horus radio. When you have a new receiver (RX), you first have to bind it […]
Generally speaking the binding procedure is about the same, hold the bind button receiver while giving it power, then on transmitter select binding mode with the correct protocol for your receiver. After that your receiver and transmitter are bound, then the rest of the configuration is within betaflight configurator to tell the FC how to handle the input from the receiver.