You can't simply go to the My Nintendo Store and buy the Switch 2. To order the Switch 2, you need to log in with an active, paid Nintendo Switch Online account. Once you do that, you can choose either a Switch 2 standalone console or the Mario Kart World bundle and then hit the confirm button to "register your interest" in ordering a Switch 2.

Nintendo reveals record-breaking sales of Switch 2 as fans hunt for restocks - Gamers worldwide have eagerly awaited an upgrade and the release saw long lines outside stores

Nintendo says it sold more than 3.5 million of its new Switch 2 gaming consoles within the first four days since its release — breaking a record for the company. In a Wednesday announcement, Nintendo said that this marks the "highest global sales level" for any of hardware it's