Would it...
A) Hit 2-5 times twice B) Hit 2-5 times once
The answer is B, hits 2-5 times once.
http://replay.pokemonshowdown.com/hackmons-74272880
It only hits 2-5 times once per turn.
“It does not affect multi-strike moves.”
http://bulbapedia.bulbagarden.net/wiki/Parental_Bond_(Ability)
https://www.facebook.com/SerebiiNetPage/posts/558171837602441
Hope I helped :)