My husband came to live with me in the usa only has a valid
B1/B2 visa. Can we file to get a grn card? Or what do we do?

Are you a U.S. citizen?

Are you a U.S. citizen?

Yes I am a usa citazen

Yes I am a usa citazen

You guys should go though Adjustment of Status. File forms I-130, I-485, (and optionally but recommended also I-765 and I-131) together. Each form has many supporting forms and documents.