Before scanning your QR Code, make sure that your smartphone has a QR Code reader app installed. If not, download one from your phone's designated app store.
Note that devices running on iOS 11 or later and most Android smartphones already have a QR Code reader built-in.
Scan the QR Code by opening the Camera or reader app and face the phone camera towards your Code. You will see the Code displayed on your phone screen. If your QR Code is readable, the encoded address or action will be accessed automatically.