Sorry this is the only group I could think to post this.
A few years ago I generated a pdf map book from an ArcGIS Pro project. 224 pages and cover page of the map index.
I was able to generate a clickable link to each page of the PDF by creating a label for each polygon on the cover page. Then bring it into the Mapbook replacing the cover page and I could automatically generate an internal link to each page in the pdf.
I need to recreate this but I failed to keep my documentation on what the text was used in the label..
I found the original solution online or in Adobe Help but I cannot find it again.