Depending on your platform (PC or Mobile), these zip files usually serve one of three purposes:
Move the extracted WEPES folder into your Documents\KONAMI\PRO EVOLUTION SOCCER 2019 directory. Download DataPES2019 zip
Move the .obb file into Internal Storage > Android > obb > jp.konami.pesam . Depending on your platform (PC or Mobile), these
Use a standard tool like WinZip or Microsoft Support's built-in extraction to unpack the zip folder. Locate the Destination: Download DataPES2019 zip