MMcg1:
Look at the top of your screen on the opening page,
On the top left you have 'WORLD GOLF TOUR"
Look at the next title on the right - "GET CREDITS"
Click "GET CREDITS" then "Free Credits" - look at the available choices on that page and you will see "Surveys" - If there are any available, you will see them by opening the "Surveys" page - if not come back later!
ALSO you can get there from the "MAIN MENU" page (where you choose the kind of game you want to play) - if there are surveys available, you will see a notice just below the "Consecutive Days Played" banner.