Roman Bronze Coin Celebrating Octavian & Antonys Victory Over Brutus & Cass

I'm afraid you have it mis-identified, or at least mis-described.

The coin is a Roman Provincial, from the Roman colony of Philippi in what is now north-east Greece. They were struck sometime in the reign of Claudius and/or Nero (AD 41-68); it is described in the catalogues as "pseudo-autonomous", as it does not depict or name the emperor, though as a loyal Roman colony stacked with citizens mostly imported from Rome and Italy, Philippi was never truly "autonomous". The reverse depicts three standards and the legend COHOR PRAE PHIL (Praetorian Guard, Philippi). Philippi was rebuilt and re-founded as a settlement for retired military veterans, including the Praetorian Guard, the Imperial bodyguard unit.

On the reverse is Victory flying, with the inscription VIC AVG (Victory of the Emperor). This is indeed most likely to be a historical reference to Octavian's victory at the nearby Battle of Philippi. Of course, when Octavian won the Battle of Philippi in 42 BC, he wasn't AVG (Augustus, or emperor) yet.

Although your coin isn't quite what you hoped for, it is nevertheless a popular and sought after coin type. It was issued at roughly the same time as St Paul visited the city (circa AD 50), as recorded in the Book of Acts, and thus readily qualifies as a "biblical coin".

Yes. Octavian was "Imperator" (IMP) from 38 BC, but was not granted the title "Augustus" by the Roman Senate until 27 BC. The title did not exist prior to that date. Any coin using "AVG" must date from after 27 BC.