Unity Build that supports wii

When I try to change the build to Wii it say’s I need to download a build that supports wii. Well I wasn’t sure what it was talking about but I decided to google it. I googled SO many possibilities, even “Unity build that supports wii” Can someone help? I wanna try and make a wii game! :3 Please be infromed that I am 97% new at Unity

You need to be a licensed Nintendo developer and buy the Unity Wii license, which is generally not done unless you’re an actual established company with a decent budget.