Currently, SfBarcodeGenerator's QRCode Symbology only supports string values (numeric, alphanumeric, or Shift JIS characters). So, could you please provide additional information about your requirements? That would help us to provide an appropriate solution at the earliest.
Please find the below user documentation to learn more about QR Code symbology.
https://help.syncfusion.com/maui/barcode-generator/two-dimensional-symbology#qr-code