Answer
It is showing 0 dollars because when you are trying to create bot with USDT requirements , it really needs USDT , not the other tokens. So the things you can do is to first manually sell the BTC into USDT in the market section. Choose Market – find BTC/USDT – click manual – and then sell your BTC into USDT there. After you got the USDT, you can use it to start the bot which need USDT as requirements.