John 3:16 For God so loved the world, that he sent his one and only Son, that whosoever believes in him shall not perish, but have everlasting life. One of the most famous verses of the Bible, that tells people how to be saved.
To become a Christian, just pray: “Jesus, I accept you, be my Lord and Shepherd.” You can pray it in a different way too, thats just an example. Jesus loves you, no matter if your bad or good, he loves you, so he died and raised from the dead for you.