Você viu?

From the video learning course, INTENSIVO.

To ask "did you see..." or, "have you seen..." use VER (to see).

Like this:

Você viu Gabriela? ➜ Have you seen Gabriela?
Você viu o jogo? ➜ Did you see the game?
O que você viu lá? ➜ What did you see there?
Você já viu tudo? ➜ Have you already seen everything?
Você já viu? ➜ Did you already see it?

Look at how the was inserted into the last two examples. Já means already in these examples.

Don't get hung up on whether you are saying did you see or, have you seen. These are basically the same thing. If you want to talk about something that you've been seeing over a long period of time you would say,

Você tem visto Marianna esses dias? ➜ Have you seen Marianna these days?

Which is the pretérito perfeito composto.