In order to transfer Tezos (XTZ) from Coinbase to Kukai, you will need to first withdraw your XTZ from Coinbase to your Kukai wallet address. To do this, log in to your Coinbase account and select the “Withdraw” option. Enter the amount of XTZ you wish to transfer, and then enter your Kukai wallet address as the destination. Once you have confirmed the details, the transfer will be initiated and your XTZ will be transferred to your Kukai wallet. It is important to note that the transfer may take some time to complete, so please be patient. Additionally, Coinbase may charge a small fee for the transfer, so be sure to check their fees before initiating the transfer. Once the transfer is completed, you will be able to access your XTZ in your Kukai wallet.