Support for the Numbers app in shortcuts is pretty limited, and, except as noted below, consists of opening, creating, and exporting a spreadsheet. I’ve included below a few other options.
There is not an action to get the values of a spreadsheet, and one alternative is to to use an AppleScript. Because shortcuts do not understand AppleScript’s missing value constant, the following shortcut instead returns a “No Value” string when a cell is blank.
Get Spreadsheet Values.shortcut (21.6 KB)
Similarly, setting the value of a cell requires use of an AppleScript.
Set Spreadsheet Value.shortcut (21.5 KB)
You can use the action entitled Add Row to Top or Bottom Row of Table to both add a row and to set the values in the new row. This shortcut requires that you specify the target spreadsheet.
Add Spreadsheet Row with Values.shortcut (22.2 KB)
A few comments:
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The first two of the above shortcuts assume that a Numbers spreadsheet is open. If it’s not, an action should be added to open the spreadsheet.
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You can apparently use JavaScript instead of an AppleScript in some of the above shortcuts (see video here).



