this is my first issue ive reported about any mod so im not sure what to put but it is just telling me to download projectile_damage, the only thing i can find though is for 1.20.2 and below and im on 1.20.4, i appreciate your time.

I get that it looks confusing since it doesn't outright display 1.20.4, but if you read the description of this version here, then it says it supports every version of 1.20.X.
Hope this helps!