A much larger Argentine destroyer force needs more than ships

How many extra Argentine Hercules and Meko destroyers would still be operational today?

It cannot be answered from hull numbers alone; future governments' funding, manning, infrastructure, and replacement choices determine the result.

A major Argentine expansion would require money, trained personnel, and base capacity. Once the counterfactual changes governments enough to buy and sustain the fleet, there is no reliable way to predict how many ships survive in service decades later. A fourteen-destroyer force would require repeated political decisions about maintenance, modernization, and replacement, rather than a single large purchase. Depending on those later choices, the result could range from no survivors to a fully replaced fleet, which makes a single present-day total misleading.