Turn on your PS5 console.
Connect the controller to the PS5 using a USB cable.
Press the PS button on the controller.
Wait for the controller to register on-screen.
Unplug the USB cable if you want to use it wirelessly.
To connect wirelessly:
Put the controller in pairing mode by holding the PS button and the Create button at the same time until the light bar starts blinking.
On the PS5, go to Settings > Accessories > General > Bluetooth Accessories.
Select the controller from the list to pair.