I'll be honest with you, get Skyrim (if you never played it). I thought of odyssey as "Super Mario's Easter Egg Party!"
I have both games and I can tell you I've put more hours into Skyrim than SMO, easily. Skyrim for Switch also comes with DLC packs, a few fitting Legend of Zelda-themed items, and motion controls if you feel like pillaging a village by swinging a joy-con.
Don't get it wrong: get both games, but just get Skyrim now--the physical might become harder to find and Skyrim will offer a better value, content-wise (as far as completion).