Aman makes a claim that he can predict the exact score of every football game, before it begins. and he's always right. how's that possible?

He says the score before every football game begins is 0-0.

Explanation:

You did not specifically say at what time during the game. This is also the only logical answer to the question.

by looking at someone you know and chat with them or look on something like a painting or anything then the person or bring a book with you and act like you reading something or think about something that you like so you can spaceout and not put attention to what is happening around you .