1984 Buick Electra Park Avenue

The engine ran good, ut the Transmission does not work, ried to fix it at home but it needs to be taken to a professional. It is currently can not be driven.While parked at the mall someone tapped the back bumper on the right side, ou can see the right side is slightly pushed in compared to the left side.The plastic that goes between the bumpers has deteriorated/fallen offClear coat pealing off hood and trunkvarious spot locations of rust