You can use "it shouldn't ___" to talk about the future. You use it when you're guessing about the future, but you have a strong reason to think that things will happen a certain way. For example:
This shouldn't take too long.
You would say this when you're about to interview someone, and you don't have a lot of questions to ask them. The interview might take a long time, but it probably won't. In this case, you can say "it shouldn't take long."