Scan the QR code and enter the six-digit code to enable 2FA. Also, write down the key and store it in a secure space, as it'll come in handy if you lose access to your account.

Never heard of it. It's also worth mentioning that you can connect your Xbox to a Discord voice channel from a PC too. But to do so, you'll need to scan a QR code using the Xbox Mobile app to join.

The easiest way is to scan the QR code that you see on your PS5 screen using the mobile app. To do this, launch the mobile app and then tap on your profile avatar.