Turn on Bluetooth on your PC
On the PS5 controller, press and hold the PS button and Create button until the light bar starts flashing
Open your PC Bluetooth settings
Click Add device or Pair new device
Select Bluetooth
Choose Wireless Controller from the list
Confirm pairing if prompted
Wait for the controller to connect
Open your game or controller settings to test it
If needed, connect the controller with a USB cable first, then try Bluetooth again