the mitzav is only to give 2 peole ?
Not quite sure what you are asking. The mitzvah is to give a gift of two food items to one person. Some confusion seems to exist because the mitzvah of matanos levyonim is to give tzedakah to two people.
(On the other hand, if you were trying to ask if the mitzvah is only to give to people, then the answer is yes. No mitzvah to give to pets.)