Answer:
About 32.5 miles
Explanation:
It's hard to say what exactly 1 unit is as the map/scale is kind of vague about that but we will just assume that 1 unit = 100 miles.
With this information we can figure out what the distance between Verona and Venice is by multiplying the distance of one unit (100 miles) by the units of distance (0.325 units).
100 × 0.325 = 32.5 miles