lartola
macrumors 68020
How to scan documents on your iPhone or iPad - Apple Support
You can use the Notes app to scan documents and add signatures on your iPhone or iPad.support.apple.com
I've been using the iOS Notes document scanning feature for this and it works surprisingly well.
And just in case you didn’t know the same document scanning feature found in notes has been available in the iOS files app too for at least a year.