TYSM FOR YOUR REPLY!! I thought it's typing "#" during the correct time or space for 4 times haha
actually the Petscope one is connected to the perfect present, inside the perfect present there will be a x and y number be showed, and you need to find the same coordinate inside the Petscope game.
The bigger the x number, the location will be more towards right, the bigger the y number, the location will be more towards down. You can see your coordinate at the top right of the screen, after your number getting close to the coordinate, you could just randomly click around until you find the exact perfect location.