I saw an article I can now receive my refund through coinbase. And I can’t find the option

That is not an option on TurboTax.    You can receive your refund as a direct deposit to a bank account or a card, or as a paper check mailed to your address.   You will find the options to receive your refund in the FILE section.

See the following TurboTax article.

TurboTax and Coinbase Team Up to Make it Easy to Reinvest Your Refund in Cryptocurrency

Note that in order to get the Coinbase option you have to have started your tax return from the link in Step 1 in the TurboTax article.

But the IRS pays your refund in U.S. dollars. All that TurboTax is doing is giving you an easy way to send those dollars to your Coinbase account. You can accomplish the same thing by getting your refund by direct deposit to your bank account, then transferring the dollars to your Coinbase account.