I haven't be able to get a good rating out of it.
Since Flect wasn't moving, he was just standing. We can't use the same frozen comparison thing like Izuku did with Gear Shift against Shiggy. Who was frozen mid jump.
Using Supersonic perception, since Flect can keep up with 20%, which is supersonic in canon. Didn't get me high results, it was Hypersonic+ in fact.
I've stated this before I think. The distance between Flect and Izuku is at most around 20 meters, him throwing those other punches don't add up to much higher either.