Every person who has states they believe in Christ.
“Those who believe and accepted His message were baptized…” (Acts 2:41)
“But when they believed Philip as he preached the Good News.. and the name of Jesus Christ, they were baptized, both men and women.” (Acts 8:12)
There is only one qualification in the Bible to be baptized. Believe in Christ. Obviously you’ve got to be old enough to understand what that’s all about. You may have seen people baptized when they were babies - in fact, you may have been yourself.