You can use the Mavis Market to transfer or gift NFTs to another user. To do that, you may follow the following guide.
Transferring/Gifting NFTs
Step 1: On the NFT's details page, click on Gift.
Step 2: Enter the Ronin address [or RNS] of the recipient, then click on Confirm gifting.
Step 3: Confirm the transaction on your Ronin wallet.
Step 4: You will receive a confirmation message, and your recipient will receive the NFT shortly.