Is There A Way To Retrieve A Deleted Note?

This is a long shot but if you haven't done any action (like copying some other text) since the deletion of that note, you can go into your notes app, do a "shake to undo" (assuming you have that enabled), and see if you still have the option to undo the delete.

 

There's a Recently Deleted Notes folder. Try there. If you deleted it from there, then you could access a cached version on another device. Just be sure to disconnect it from the internet first (so that a sync doesn't delete it).