So I downloaded a sword from Nexus Mods, and edited it slightly in the CK. And as I was doing that, I saw something labeled "Critic % Multiplier", and it had a value of 1. Does it just mean the sword has a 1% chance of doing critical damage? If so why is it just 1%? Considering that all the other weapons have the same value on crit % mult.

Probably because it's handled by perks instead.

No, it means that the percentage granted by the perk is multiplied by 1 when applied. So if the perk gives you 10% chance, that's what you get. Setting it to 2 would double what the perk gives, 0 would mean no critical hits.

Thank you.