Question

Where did you go tomorrow? “did” правильно?

Answer 1

У тебя предложение не правильно записано

Можно записать так !

1) where do you go tomorrow?

2) where did tomorrow go?

3) where did you go?
ТАМ НЕ Did а, Will

Answer 2

No, "did" is not the correct auxiliary verb to use in this sentence. "Did" is the past tense of "do," which is not appropriate for talking about future events.

Instead, you could ask "Where will you go tomorrow?" to inquire about someone's plans for the next day.