Ben there. 6 months of therapy post surgery to rebuild it.
FWIW, I skied on it torn for 3 days and did fine, also had a partly torn MCL, meniscus tear, and a tibia fracture. A few ibuprofen and I was good to go, I just couldn't hockey stop very well on that side.
I went to the gym afterwards too, worked out like normal, just had no Lateral knee stability. As the Ortho surgeon put it: "you can't tear it any worse now"
Once you get the surgery, sports are a no go until you go through the therapy process and heal and rebuild your quads.
Point is that if you had a plan, and the timing for any sports season allows, it isn't strictly necessary to immediately have repair surgery and your knee can be fairly functional without an intact ACL.