Acts 2
40 And with many other words he testified and exhorted them, saying, “Be saved from this [l]perverse generation.”

So from this verse, it is very clear that the full sermon is not written here.

From my commentary:
Be saved from this perverse generation: Any generation that is responsible for putting Jesus to death is a perverse generation. But since every generation is responsible for Jesus’ death, every generation needs salvation.

Peter’s sermon caused the people listening to want to act. Peter gave them instructions. Get saved. Get baptized. Salvation is the first thing.

There is truly only one message, Christ and Christ crucified.