Reference Script below to copy & paste
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function exportOrgUnits() {

   // get google sheet as we'll write data to it later, change sheet name to match yours
   const sheet = SpreadsheetApp.getActive().getSheetByName("Sheet1")

   // you can add more fields based on your requirements
   const fileArray = [
       ["Org Unit Name", "Org Unit ID", "Parent OrgUnit Path", "Parent OrgUnit Id"]
   ]
   const orgUnits = AdminDirectory.Orgunits.list("my_customer", {
       type: "ALL"
   }).organizationUnits.forEach(orgUnit => {
       fileArray.push([orgUnit.name, orgUnit.orgUnitId.slice(3), orgUnit.parentOrgUnitPath, orgUnit.parentOrgUnitId.slice(3)]) // you can add more fields based on your requirements

   })

   // write data back to our sheets
   sheet.getRange(1, 1, fileArray.length, fileArray[0].length).setValues(fileArray)

}

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