try this:
function main(workbook: ExcelScript.Workbook) {
let selectedSheet = workbook.getActiveWorksheet();
// Unprotect range A1:B10 on selectedSheet
let rangeToUnprotect = selectedSheet.getRange("A1:B10");
rangeToUnprotect.unprotect();
// Insert at range 2:2 on selectedSheet, move existing cells down
selectedSheet.getRange("2:2").insert(ExcelScript.InsertShiftDirection.down);
if (selectedSheet.hasAutoFilter()) {
selectedSheet.getAutoFilter().remove();
}
}