How do I find out how much time my husband was sentenced?

You would need to call the Clerk of the Court in the jurisdiction where he was charged and convicted. When calling, ask for the Judgment and Commitment Order. This would be the document that catalogued the fine and/or punishment that the judge signed into the record. They might not give you the information over the phone so you'd then have to order the printing and mailing of the document (for a nominal handling fee) to your home.