Install a minecraft map on switch

On the base, there are USB ports

Otherwise, I'm facing the same problem as you, how to load maps on Switch...

Mystery

Hello, so I don't have an exact answer, but with realms it seems that it's possible

-I think you need Minecraft on phone with realms (and create another Microsoft account)

-Then on the Switch you have to add the account with the map

-And finally you need to join the world on phone (or on Windows 10 it works too, I think) and in the world settings (on the Switch) IT SEEMS that you can download the map

(after I saw this in a video but I'm not sure it works)

there is indeed a "hole" in the base to connect it to the television