Q.My Duranta got frostbitten this winter
What to do to rejuvenate? The leaves are dead. Do I prune or cut back? I’ll appreciate your suggestions!

Cold damaged plants can be watered and given a boost of liquid fertilizer to help aid in their recovery.
You can prune cold injured plants and the article below will give you specific guidelines on how to do so, but be sure to do so only in spring or inside your home.
For more information on saving cold injured plants and for tips on pruning cold injured plants:
For more information on the care of duranta plants, please visit the following link:
https://www.gardeningknowhow.com/ornamental/flowers/duranta/care-of-duranta-plants.htm