What dose John 3:16 mean? My father asked me to look it up because it is my birthday?

Then you should look it up. Not ask other people what it means. But I want best answer lol so I'll answer the question anyways: John 3:16 is a verse in the Christian Bible (a verse is like a sentence or two). It says "For God so loved the Earth that He gave His one and only son, so that whoever may believe in Him may not be punished, but have everlasting life." Which basically means that if you are a Christian and you believe in Jesus then you will go to heaven. If you don't believe in Jesus then you will be punished, aka going to hell.

That Bible verse basically describes our salvation as Christians. It talks about how God sent His only Son, Jesus Christ as a sacrifice for the sins of the world and that if we believe in Him and accept the gift of salvation, that we will have everlasting life in heaven.

by the way, John is the 4th gospel, my name is not John it is Pat