First of all: if you didn't buy the games, you can't answer them.
Head to 5pb site and click where the picture points
Now scroll down to the game you bought and want to answer the questionaire for (in the picture Lucian Bee's as example from the article I made in the main site). Pick the manual of the game, and in the bottom-left corner of the back page, you will see 4-alphabet letters and 5-digit number. You need to write the 5-digit numbers where the picture points, and then click on the button on the right.
Now answer the questionaire. I noticed that the question didn't change (I did this for both Your Memories Off Girl's Style PSP and Lucian Bee's) but the answers for some questions did. Under spoiler, I will only translate the questions.