So sorry for your loss, but nothing can be done, there are several cases of hacked accounts like this, and mostly commonly to exchange. Exchanges are often hacked, and binance is not trustworthy. In 2019, many individual binance accounts were hacked, binance agreed to this and promise to strengthen it security, this could be the same case and it can be due to your carelessness as well. I will advice you not to use exchanges that have been hacked before like binance for trading, there are many exchanges that are reputed and safe that has never been hacked before.
But also know that to keep such amount, hardware wallets are the best options, you can easily send your tether to exchanges and make your trade and send your coins back to hardware wallet instead of risky your funds on exchanges. Exchanges are not safe means to store such large amount.