Does seller have right to see appraisal done for buyer's bank?

The appraisal is the property of the lender who ordered it, and the buyer who paid for it. It is not the property of the seller. In the event the home appraised for less than the contract sales price, the seller and their agent may request a copy of the appraisal before considering reducing the sales price, and I would probably give them a copy if that were the circumstance. In general, though, sellers are not entitled to a copy of the appraisal.