UNI token is claimable by anyone who has traded on the Uniswap decentralized exchange prior to September 2nd 2020.
The Uniswap team took snapshot of the Ethereum blockchain on 1st September 2020. The price was trading around $1 when UNI was first listed on Uniswap but quickly rose to around $3 and stayed there once Binance announced its listing.
Immediately after Binance exchange listing, it was announced to be listed on Coinbase which is most popular fiat-to-crypto exchange. This pumped its price to around $4. Today, OkeX exchange announced that they would listing UNI token as well and now, price is trading around $5. Price of UNI token did manage to reach whopping $6 for few hours.
Uniswap (UNI) is launching at https://t.co/bCG11KMQ6s and in the iOS and Android apps within the next 15 minutes. You may need to refresh your app to properly buy, sell, convert, send, receive, or store UNI. We will update when UNI is fully live. https://t.co/A7al55qr9e
Keep in mind that only 150M UNI tokens are claimable so if you ever traded on Uniswap before September 1st 2020, make sure to headover to Uniswap.org and follow the instructions given in this video.
In the video, you can see that he used Trust wallet to claim the UNI tokens. You would need ~$40 worth of Ethereum to pay for transactions as Ethereum network is cloaked right now. Once, UNI is claimed, you can either keep it in your wallet or sell it for BTC or any other cypto on any centralized exchange like Binance, OkEx or Coinbase.