As long as you're using the supported mobile barcode scanner devices, you should not receive an error during installation, @hady144.
 

To begin with, this error occurs when there is a problem during the download process or with your device storage. 
 

You can restart your device and try reinstalling it to fix issues, such as installation errors. It clears temporary files that may interfere with the device's operation.
 

If the issue persists, delete the downloaded app and download it again. Make sure that you download the app from a credible site.  
 

I also added this article to learn about several supported mobile barcode scanner devices: Setup and use the Warehouse Manager in QuickBooks Desktop mobile.
 

Click the Reply button if you have any other questions.