If you currently hold XYO Tokens in an external wallet, you can sell them on an exchange or to a private buyer. If you still need to withdraw your XYO Tokens, you can see the instructions in this article.
You can see what exchanges currently support XYO Token sales here: https://coinmarketcap.com/currencies/xyo/#markets
On "Coin Market Cap", you can also view the price of XYO Tokens on different exchanges! If you wish to sell your XYO Tokens on an exchange, you'll need to make an account with that exchange, and follow that exchange's protocol for how to sell your tokens.
Note: Any issues with an exchange regarding loss or misplacement of your XYO Tokens will need to be brought to that exchange's support team. We cannot assist with any token losses or misplacements with another product or tool that is not ours!