A 32-nation panel preparing for a major conference of the U.N. Commission on the Status of Women ended its meeting in disarray in Vienna after a dispute over the agenda. U.N. officials said it will now be hard for the conference to design a plan of action when it convenes in July to evaluate the U.N. Decade of Women. President Reagan's daughter Maureen, leader of the U.S. delegation to the commission, charged that the Soviet Bloc, which wants to expand the agenda to include action against an "unjust world economic order," is deliberately obstructing agreement. Soviet delegates could not be reached for comment.