A "pagoda" is a structure, usually with multiple stories, each with an ornamented, projecting roof, in the style of a Buddhist temple.
A "pergola" is an arch or walkway formed by a series of trellises covered by vines.
"Pergoda" is not in the dictionary. It might be a recently-coined portmanteau of "pergola" and "pagoda" (a multi-tiered pergola?)... or it could just be misspelled.