I allowed my husband to destroy my credit? How to fix? Avoid the hi interest & fees of loans at this score?

I am married 24 yrs to a man who doesnt take responsibility for anything. Four yrs ago, I reached my limit. (admittedly a slow learner--thats another post lol). The short version is we put all the debt in my name. He gave me part of his check. I confronted him (I wear the kids old boots and he owns a 4 wheeler & full winter gear for ex). I work overtime, he takes seasonal layoff yearly. He said I was just too dumb to budget properly & took over payments. I gave my check over. When he started to fall behind I talked with him but I didn't fight thinking he deserved a chance and time to learn. He saw that as betrayal and started hiding things from me. In 4 yrs, we are now headed for divorce and financial ruin. My credit rating is shot. I have 20 years not one missed payment and 4 yrs of hell on the report. I cant even get an apt approved. I didn't make this mess...what can I do? He cashed our retirement accts & racked up more debt. He walks with good credit...help.