it is not entirely certain what you mean by this question, because the scientific as a subject overriding the existence of God is not typical of the theistic sections of the forum, so i can say what the purpose of life is according to the Word of the true Lord God, it is the souls of the universe to be provided with abundant and everlasting life
John 3:17 "God sent not his Son into the world to condemn the world; but that the world through him might be saved.",
Luke 9:56 "the Son of man is not come to destroy men's lives, but to save them.",
John 12:49-50 "I have not spoken of myself; but the Father which sent me, he gave me a commandment, what I should say, and what I should speak. And I know that his commandment is life everlasting: whatsoever I speak therefore, even as the Father said unto me, so I speak."
Blessings