Download Arch.Iso and create bootable USB and launch or go to ArchX.iso instead to skip all steps.
curl -s https://raw.githubusercontent.com/X3ric/ArchX/master/install | bash
1: Run iwctl
2: Run device list, and find your device name.
3: Run station [device name] scan
4: Run station [device name] get-networks
5: Run station [device name] connect [network name], enter your wifi password.
6: Ctrl and C to exit.
Optional ping archlinux.org, and then Press Ctrl and C to stop.