This is a tough one to find a source for.

It's in Mayfair Music's Nancy Wilson volume of sheet music for $27.

But you can get it for a $5 donation directly from the Billy Barnes Foundation:
https://www.thebillybarnesfoundation.org/sheet-music

Doug Mackenzie will sell you a transcription of the accompaniment for $1.20 if you buy at least three different transcriptions from him. Or you can copy the chords from his YouTube video with scrolling accompaniment:
https://www.youtube.com/watch?v=flEujoGdMJU.

Cheers,
Jer