Google-sheets – How to make a Google Sheets cell output any string

I can't manage to get by the permission error, this might work for you.

function onEdit(e) {
  var sheet = SpreadsheetApp.getActiveSheet();
  if (sheet.getName() == "Project"){ //Change to your sheet name
    var sourceRange = e.source.getActiveRange();
    var sourceRow = sourceRange.getRow();
    var sourceColumn = sourceRange.getColumn();
    var sourceValue = sourceRange.getValue();

    if(sourceColumn == 1){ //Change to the column you want to get the value from
      var noteCell = sheet.getRange(sourceRow, 2); //The cell where the Note should be, B-column on the current row
      noteCell.setNote(sourceValue);
    }
  }
}

EDIT
I do believe this is what you want. The function above sets a note on the cell in the B-column on the current row, if the cell in the A-column is edited.

If you don't want the note to update with A1 you should be able to use the function you wrote, with a slight modification to get the value from A1.

function noteSetter() {
 var ss = SpreadsheetApp.getActiveSpreadsheet();
 var sheet = ss.getSheets()[0];

 var cell = sheet.getRange(2, 2);
 cell.setNote(sheet.getRange(1,1).getValue());
}

function onOpen() {
  var sheet = SpreadsheetApp.getActiveSpreadsheet();
  var entries = [{
  name : "Set cell note",
    functionName : "noteSetter"
  }];
  sheet.addMenu("Scripts", entries);
};

I added a function to add the script to a Custom menu, to make it easier to access, if you don't want that you can just remove the onOpen-function.

Depending on the details of your use case, one of the following may be preferable:

1. Add a column with =ARRAYFORMULA(VALUE( B1:B100 )), assuming B1:B100 is the first output column. Then sort by this added column. This may be the easiest way to achieve the sort that you want.

2. Apply Value only to the first output. To my understanding, this requires splitting the regexreplace, so that first the replacement is made, then Value is applied, and only then the embedded array {...} is formed:

=ARRAYFORMULA({VALUE(REGEXREPLACE(A1:A100,...,"$1")), REGEXREPLACE(A1:A100,...,"$2")} )

If you choose this path, you might as well have two different formulas in two columns, one =ARRAYFORMULA(VALUE(REGEXREPLACE(A1:A100,...,"$1"))) and the other =ARRAYFORMULA(REGEXREPLACE(A1:A100,...,"$2")). I think this version is the most readable and flexible one.

3. Apply Value whenever it doesn't throw an error (regardless of columns). This could be done with IfError:

=ARRAYFORMULA(IFERROR(VALUE(REGEXREPLACE(A1:A100,...,{"$1", "$2"})),REGEXREPLACE(A1:A100,...,{"$1", "$2"})))