If you're able to dedicate time and focus to it, Duolingo will at least get you familiar with words and phrases, so that you can read and recognize more common words (street signs, menus, etc.)
Depending on your fluency and your current ability with other languages, it may get you to the point where you can understand someone who is speaking clear and deliberately enunciated Spanish to you. It may also get you to the point where they can understand your clear and deliberately enunciated Spanish as well.
There's no guarantees, but jumping into it right now is free and you can gain a certain level of confidence regarding how much it might help you pretty quickly. There's literally no reason not to try.