Greetings!
This is Tin. Looks like you would like to know where your scanned files are getting saved.
Usually it will be saved to Scanned Documents inside the Documents library, please check it from File explorer.
If it's not there, please check the Picture folder and choose Scans.
It actually depends which location did you choose after scanning the file. You can try to scan a file again and check what was the default location that was set up on your scanner.
Thanks,
Tin