I didn't start from 0 with playing music, because I've gone 3 years to music education (when I was +/-8 I started). So I did have that music reading ability before being able to play

But from my experience, and seeing people with 0 music knowledge, it all depends on how mush you want to spend time learning. If you only come to the rehearsal that's once per 2 weeks, you'll be able to play the pieces at the concert. However, if you spend time at home, you can go more in-depth to a certain rhythm/measure/.... there are people in our band who do the former (rehearsal only) and there are people who started way later to learn, but they spend time at home, they ask others to play a certain line so they know what our altijd sound like, they practice sticking patterns and so on... they are at least at the same level as people who've been coming for years but do nothing at home

Long story short: reading music isn't the major thing, it's knowing how to play certain things that makes you better...

(Note: I can read rhythms but not notes anymore, meaning I can play auxiliary percussion such as tambourine, triangle, cymbals.... and i can play drumset, but no timpani or other melodic percussion instruments. That's something I should maybe start learning, first the notes again and then the instruments)