To score a perfectly time goal you must use the new perfect shot feature. This is to double tap the shoot button and the second tap must be timed perfectly.
What I would suggest is starting a kick off game, classic match with the difficulty on Beginner. Now when the match starts press start and turn on the 'trainer'. This will allow you to see the new timing bar when taking a shot.
So you are aiming to get your second tap of the shoot button in the green area of the bar. Just keep taking shots using this feature and eventually you will get the timing down for the second tap. You will be scoring lots as you're on beginner so chances are your first perfect shot will go in as long as you're not too far away from goal.
As soon as you achieve the 'Great' or 'Perfect' timing and score the achievement will unlock.