Publisher V2beta on an iPad Pro 2021 and Magic Keyboard: Holding down the Shift Key and pressing any of the top-row numbered keys causes both the number and the symbol to be entered in my text. (See attached screen shot).
In addition, holding the shift key and pressing the hyphen key (ā-) causes any text in a selected text frame to vanish. Holding the shift key and pressing the equal key (ā=) causes the vanished text to re-appear.