Sorry, but in evolution there is not purpose given for life, none that I can find anyhow, but, if you have chapter and verse, I would be most interested in seeing it.
Do you just have a new bible delivered to your doorstep every morning to help you catch up on the day's news? Not everything has a chapter and verse.
Anyhow, science does not attempt to explain the meaning of life. That type of question is happily left in the realm of philosophy and religion.