This App, allows you to scan multiple Barcode at once using PowerApps and we can patch the same to our destination environment like, SharePoint/Dataverse/MSCRM etc.,.
*Note:
In this App, I have used
Back End - SharePoint
List Name - Barcode List
Barcode to Save - Title in Barcode List
Query to Patch :
ForAll(getMultipleBarCode,Patch('Barcode List',Defaults('Barcode List'),{Title:Value}));
Video Link for your Reference : https://www.youtube.com/watch?v=SSu95JPECl4&t=314s