Using your account, you can perform a remote wipe of your Oculus Quest even if you don't have physical access to your device.
To remove your data from an Oculus Quest remotely:
On a computer or mobile phone, navigate to https://secure.oculus.com/my/devices/.
Choose your Oculus Quest headset from the list of devices.
Click Delete Device Data then click Continue.
If you don't see this option, your device's software version may not support remote wipe.
Complete the verification flow to confirm your identity.
Once the factory reset is complete, your device will disappear from the list. It will then be factory reset the next time that it comes online.