Even some of the worst critics of Acts, the Westar Acts Seminar, had to admit:The historical value of Acts is no longer held aloft, yet it is still used as one of the primary means of dating the Pauline epistles,
From a Westar Acts Seminar release in 2013:
"This is not to say that Acts is totally unhistorical, but to observe that it is less helpful in the historical reconstruction of Christian beginnings than previously assumed."
I agree with this statement.
Details in:
http://historical-jesus.info/75.html
http://historical-jesus.info/76.html
About the dating of Acts:
http://historical-jesus.info/63.html
http://historical-jesus.info/64.html
Cordially, Bernard