Tap the Share button -> Share Chord Chart, then select:
iReal Pro Format: share it with your iReal Pro bandmates via email, Dropbox, AirDrop or any other cloud service and they can import it into their device. (Mac: Share/Share chord chart/Mail (or Save to disk)
PDF: print the chart or share it with a musician who doesn't have iReal Pro
Forums: it will copy the song to your clipboard. Log in to the forum and paste the content of the clipboard into a post in the related Forum. Log in to iReal Pro Forum, go to Sandbox, start a new thread and post your list. You can access the posted link from your other devices and share it with fellow musicians.
MusicXML: create a chart and import it into a music notation software like Sibelius, Finale, or the free MuseScore. Used for chords (not MIDI notes) according to the song’s form/
More info here about exporting to MIDI.