RICHARD STEINER: The Aramaic Text in Demotic Script: Text, Translation, and Notes (Academia.edu). HT Aaron Koller on Facebook.
This file is full-on philology applied to one of the most difficult of our surviving ancient Aramaic epigraphic texts. But if you just want to get some idea of what the text says, you can read the English translation in the right-hand column.
In addition to being difficult, Papyrus Amherst 63 is a fascinating and important document. Past PaleoJudaica posts discussing it are here and here. Cross-file under Aramaic Watch, although the papyrus also includes material in Hebrew/Canaanite.