The Book of Acts does not cover Paul's death.
It ends with him awaiting trial in Rome.
There is history that says it was at his 2nd trial in Rome that he was slain. There is a line of scholarship supporting that, but it is not definitive so far as I remember.
I stand corrected. However, there is no credible scholarship that suggests that Matthew, Luke, John, the non-Pauline epistles or Revelation were written prior to Paul's death.