Many Pastor and theologians will agree that Baptism does not save you. Now some people who think it does, refers to this verse in 1 Peter 3:21-22:
Baptism, which corresponds to this, now saves you, not as a removal of dirt from the body but as an appeal to God for a good conscience, through the resurrection of Jesus Christ, who has gone into heaven and is at the right hand of God, with angels, authorities, and powers having been subjected to him.
Tough verse to understand. Does this mean a lot of scholars are wrong and baptism does save you? The Reformation Study Bible says,
Baptism is a sign and seal of God’s grace in Jesus Christ. The startling statement that baptism “saves you” shows how close is the relationship between the sign and the reality it signifies. Noah’s physical salvation through the waters of the Flood prefigured the waters of baptism and the salvation they signify. Baptism symbolizes judgment on sin in the death of Christ and then also renewal of life (Rom. 6:4). The floodwaters were judgment to the wicked, and at the same time physical salvation for the just, Noah and his family.
Baptism does not save you, but is a sign that you are saved. Listen to Mark Driscoll talk about Baptism followed by John Piper: