Our Class A motorhome was hit by another driver backing out of a driveway. The accident is not our fault. We were able to drive the motorhome to an RV repair facility for an estimate for insurance but...
Was the delam caused by the accident? Otherwise you need to find an RV place that will give an estimate. Likewise the insurance company should have an adjuster that can make their own estimate.
Find the biggest nicest place around if you are looking for an estimate high enough to total the RV. Be careful what you wish for.