You easily can buy AMSC with USDT using PANCAKESWAP. Simply follow the steps below!
Visit Pancakeswap.finance, connect your Wallet, and click Swap under the Trade Menu .
On the Swap dialog box, Click the drop-down on the first currency pair and select USDT. Also click the drop-down on the second currency pair and select AMSC. Use the Search box for quick view
Put the amount of USDT you are trading on the USDT box and wait for the equivalent AMSC to display, after which you can click the Swap button to complete the transaction