In Chapter 9 of the game, The Town That Never Sleeps, you will come across Sam, who wants to flip a coin. You can choose which side of the coin will fall out. Does my choice matter? If so, which option should I choose? You can find answers to these questions on the next page of our guide to FF7 Remake.
In this case the choice is illusory and irrelevant. If you choose Heads, then Tails will be the final result. If you choose Tails, then Tails will be the final result. If you don't agree to make any choice, then Sam will just walk away. So there is no real choice in this case.
After making this choice, Cloud will realize that the coin is a fake and he had no chance to win this competition. According to the storyline, Sam is supposed to refuse to help our heroes and you can't affect this choice in any way.