I played all (available) levels of Angry Birds Summer PigNic and always get 3,977,990 as a score, for all levels (score displayed top right side).
Please see the screenshot below (today's level)
The score takes about 3 mn (three minutes) to be displayed - counting from 1 to 3,977,990.
What does that score mean? Is it be a bug or a kind of limit feature?