How can I help my husband when his parents are going through a divorce they been together for 27 years any advice,?

Maybe some books

Just be there... It's hard, but just be present. He'll open up in time as needed.

If it were me I'd just try my best to be of emotional support. Tell him how much you love him , talk to him ( pray with him if you believe in God ) sexual favors lol be understanding, maybe make a special meal or distract him with things he likes to take his mind off of things a bit. My advice.