This article explains how to scan a QR code on Samsung. All Samsung devices have QR code scanning capabilities, but your options will vary depending on the device you have.
How to Easily Scan a QR Code on Any Samsung Galaxy Smartphone (Android)
Modern Samsung devices (Android 9 or later) include built-in QR scanning functionality. Here's how to make sure the option is enabled and how to use the Camera app to read QR codes:
Tap the 'Settings' gear.
Enable Scan QR Codes if it isn't already enabled. You only need to do this once.