How can I download my digital booklet when iTunes has been moved?

Click the booklet to select it, and then press the Play button at the top of the Music App. It should then open the booklet.

Double clicking it may also work. Though it only worked for me after clicking the Play button once.

If you downloaded the album I suspect the digital booklet downloaded too. It would likely be stored with teh album tracks.

Can you just double click the booklet item to display it?