How to create pdfs from notes?

Open the note. Select the box with arrow in the upper right hand of the note. Select Markup. Markup then creates a PDF of the note. You can then save it to a file location on your iPhone or iPad. From there you can send it out via email or text message.

Tap the up arrow inside the box toward the top of your screen. Choose "Save to Files" from the dropdown.

UPDATE - Sorry, that is a plain text document, not a PDF.