Collectables section shows your hodl NFT ( non-fungible token ) .
Yet I did not do anything
Non-fungible tokens (NFT) are a unique tokens that are not interchangeable due to their individual distinctive attributes. Simply put, non-fungible tokens possess unique attributes that make it impossible for them to be replaced or exchanged.
Those NFT are from Binance Giveaway you probably participated.
Via Trust Wallet app you can buy or sell them on Opensea.
I can sell in open sea?
Thanks for bro