@Ajax93 Great question John included seven miracles that he called signs. Seven represented perfection and John chose these seven miracles as signs so that we can believe in Jesus as Lord and God. John does not mean that this miracle of turning water to wine is chronologically the first miracle that Jesus ever did — rather, John is saying that this is the first sign that he has chosen to point to Jesus’ deity.
Below is a video by Ben Witherington on the purpose of the seven sign miracles in John.
John 20:30-31 - Jesus performed many other signs in the presence of his disciples, which are not recorded in this book. 31 But these are written that you may believe that Jesus is the Messiah, the Son of God, and that by believing you may have life in his name.
John 21:24-25 - This is the disciple who testifies to these things and who wrote them down. We know that his testimony is true. 25 Jesus did many other things as well. If every one of them were written down, I suppose that even the whole world would not have room for the books that would be written.