If you do not sync the Notes app via the cloud, Apple does not provide options to export notes from your device to your computer.
With iMazing you can export multiple notes to your Mac or PC computer, as a text file.You can even browse notes from a backup of your device – a lifesaver if your device was lost or stolen.
Anyone who wants to easily access or backup notes to their computer, or to an external drive.
Download and install iMazing.
To transfer iPhone, iPad, or iPod Touch notes:
Launch iMazing and connect your device.
In the left sidebar, select Notes. To view your most recent notes, you may need to refresh your data.
If this is your first time connecting your device, iMazing will initiate a backup to pull your notes.
Select the note(s) you want to export.
In the bottom toolbar, click the Export button. This will open a save panel dialog box.
In the dialog box, select where you want to export your files, and click Choose.