I am just curious, but how exactly do our days without competition fit into the picture? Are they just recharge days for our members to make sure they don't get too tired, or do the amount of days we don't compete factor into our score, As if we rehearsed and cleaned the show.

It basically is a way for your members to recharge their health. Your practice focus is what it is regardless of a show day or not (you practice every day). The days you do or don't compete do not directly factor into your score, however if you do too many shows it will deplete your members health.. and if you don't do enough shows then your score will suffer

What exactly is the impact of a member having high or low health? Obviously I wanna keep my people healthy and happy but I'm just curious as to the exact effect health has on rehearsal/performance

Yeah, does score directly scale with health (eg. a member at 80% of their max health performs at 80% of their talent level), or do your members just "drop out" at 0 health (give no impact to the score once their health is depleted)?

I created a tutorial page at https://drumcorpsthegame.com/tutorial you can also find a link to it in the menu. Hopefully this should answer everyones questions about more of the gameplay.

As far as actual numbers, I can't fairly disclose that - but health does play a part in achieving your max score, so you definitely want to give your members time to rest between shows.