Passando pra dizer que consegui!!
Segue o código pra quem se interessar!
Valeuuu
function onEdit() {
var sheetsToWatch = ['Base'];
var changelogSheetName = "Changelog";
var timestamp = new Date();
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getActiveSheet();
var cell = sheet.getActiveCell();
var sheetName = sheet.getName();
if (sheetName == changelogSheetName) return;
var matchFound = false;
for (var i = 0; i < sheetsToWatch.length; i++) {
if (sheetName.match(sheetsToWatch[i])) matchFound = true;
}
if (!matchFound) return;
var columnLabel = sheet.getRange(7, cell.getColumn()).getValue();
var rowLabel = sheet.getRange(cell.getRow(), 3).getValue();
var rowLabel1 = sheet.getRange(cell.getRow(), 2).getValue();
var changelogSheet = ss.getSheetByName(changelogSheetName);
if (!changelogSheet) {
changelogSheet = ss.insertSheet(changelogSheetName, ss.getNumSheets());
changelogSheet.appendRow(["Timestamp", "Cell address", "Column label", "Row label", "Value entered"]);
changelogSheet.setFrozenRows(1);
}
changelogSheet.appendRow([timestamp, rowLabel1, columnLabel, rowLabel, cell.getValue()]);
}