You have a few ways!
It's an audiobook you can get on Amazon, but if you don't want to do that?
If you have a library card, you can download either OverDrive or Libby: https://app.overdrive.com/ https://meet.libbyapp.com/
And you can see if they have the book on audio format on your local iibrary. I'm pretty sure there are other ways, but I'm sort of a goodie two shoes and don't know those ways. :(