How to easily move all notes to another folder?
There is an app named Note2Txt which will convert all your notes to a text file. One file for each note. it runs very fast and you can store the text files wherever you like.  It works fine normally but i had a problem with it on Catalina.
There is also an app named Exporter which will convert all your notes to Markup files. Again you can put the output to any folder you like and have write permissions.
Both of these apps will convert all your notes to files. You can use the Notes app to convert a single note to a PDF but that doesn't run in batch mode.