Use a USB-C cable to connect the DualSense to the PC
Press the PS button if needed
Open Windows Settings
Go to Bluetooth & devices
Turn on Bluetooth
Select Add device
Choose Bluetooth
Put the DualSense in pairing mode by holding the PS button and Create button until the light bar flashes
Select Wireless Controller from the device list
Confirm pairing if prompted
Open Steam
Go to Steam Settings
Open Controller
Enable PlayStation Controller Support if needed
Test the controller in a game or controller settings