The WI-1000XM2 headphones cannot pair with Bluetooth devices
These headphones are not water-resistant so be careful not to leave them exposed to any water or moisture, or to leave any kind of any water or moisture on them. Doing so may cause a malfunction, possibly affecting Bluetooth pairing, etc.
If the headphones are wet with sweat or any moisture, wipe them off completely with a soft dry cloth, let them dry at room temperature, and then try pairing again. If the Bluetooth pairing cannot be done even after that, refer to the Headphones Troubleshooting guide.