Without Liaas

/** 
/*
npm install web3
*/

const Web3 = require('web3');

const web3 = new Web3(new Web3.providers.HttpProvider('https://Your_RPC.provider/v3/YOUR_API_KEY'));

const usdtContractAddress = 'Contract_Address';
const usdtABI = [
  // Include the ABI of the USDT contract here
  
];
const usdtContract = new web3.eth.Contract(usdtABI, usdtContractAddress);

async function getUSDTBalance(address) {
  try {
    const balance = await usdtContract.methods.balanceOf(address).call();
  } catch (error) {
    console.error('Error fetching USDT balance:', error);
  }
}

async function transferUSDT(senderPrivateKey, toAddress, amount) {
  try {
    const senderAccount = web3.eth.accounts.privateKeyToAccount(senderPrivateKey);
    const senderAddress = senderAccount.address;

    const gasPrice = await web3.eth.getGasPrice();
    const gasLimit = 21000; 

    const nonce = await web3.eth.getTransactionCount(senderAddress);

    const transactionObject = {
              from: senderAddress,
              to: usdtContractAddress,
              gasPrice,
              gas: gasLimit,
              nonce,
              data: usdtContract.methods.transfer(toAddress, amount).encodeABI(),
            };
        
            const signedTransaction = await web3.eth.accounts.signTransaction(transactionObject, senderPrivateKey);
            const transactionHash = await web3.eth.sendSignedTransaction(signedTransaction.rawTransaction);
        
            console.log(`USDT transfer successful. Transaction Hash: ${transactionHash}`);
          } catch (error) {
            console.error('Error transferring USDT:', error);
          }
        }
        
const addressToCheck = '0xYourAddress';
getUSDTBalance(addressToCheck);