hypethetically you could, but there arent any mods to install. the pre better together update console version is its own thing seperate to any other version of minecraft and is basically impossible to mod. the wii u never got the better together update, so no.

There is sdcafiine, read a guide to learn to use it and then find a mod on the gamebanana website, minecraft wii u edition doesn't have much mods on there though..