To sell this ????, you will need to open tzkt.io and use XTZ as a listing fee. You can then find a suitable marketplace to list your item, such as Objkt Marketplace. If you need more help, you can join a dedicated NFT marketplace channel such as the one found at https://t.me/TezosNFT. This channel is for Kukai support and not for selling items, so please take your inquiry to the dedicated NFT marketplace channel for more guidance.
