Step 1: extract all files from zip (ideally to itself)                                                                            scroll -->
Step 2: rename the number of the save in the zip to what save file number you want (1 is the left ingame tv monitor 2 is the middle ingame tv monitor 3 is the right ingame monitor
Step 3: do Win+R type in %appdata% go down to Pizza_Tower GM2 then click on it then click on saves
Step 4: drag in your savedata you just renamed and you're done  
                                                                                   