what can i do with my 1 mycelium token? where can i trade it?
You could find buyers on the Telegram group they have. Mycelium tokens are only being sold on BitSquare exchange right now (which is a decentralized exchange):
https://www.cryptocompare.com/coins/mt/markets/BTCThe tokens lost a lot of value, It's probably better to hold right now and see how things goes with the new update and how valuable they would become.