How many squares do you suppose there are altogether?
You are being asked how many squares there are 'in the picture'.
Keep in mind the difference between 2D and 3D.
Each side of a cube is a square, but when a cube is drawn like this, the sides appear to be a different shape.
Look more closely at the whole picture.
Is there an actual square hiding somewhere there?
Pay attention to the poster's frame.
Answer for 'Don't be a Square'
The answer is '1'.