const botToken = '11744...';
const chatIds = ['320117024'];
var msg = 'привет, привет!';

function send(e) {
  const range = e.range;
  const sheet = e.source.getActiveSheet();
  const value = e.value;
  const old_value = e.oldValue || '';

  if (value && range.getColumn() == 2 && sheet.getName() == 'Лист1') {
    msg += `\nзначение: ${value}\nстарое значение: ${old_value}`;
    chatIds.forEach(chatId => {
      UrlFetchApp.fetch(`https://api.telegram.org/bot${botToken}/sendMessage?chat_id=${chatId}&text=${encodeURI(msg)}`)
    });
  }
}