My husband signed the voluntary departure if he signed the voluntary departure is there a punishment and for how long?

If he obtained voluntary departure and did not leave, it converts to a deportation order. He will be barred for 10 years. If he left on time, you can petition him if you are a citizen. He might have to apply for a waiver of the unlawful presence. More info is needed to fully answer this question.

It depends, why was he in immigration proceedings. If it was criminal, there will probably be some difficulty. If he overstayed by more than 180 days he is barred from returning for 3 years but if he overstayed for more than a year he is barred for 10 years. It is impossible to answer you question, without more information. Take your file to an immigration attorney and they can advise you on what is possible, you aren't going to be able to bring him back without one anyways.