After an acl surgery, how long should it take for my incisions to close and scar up?

Probably soon.: It depends on your health. Diabetes, among other things, impairs wound healing, as does some antiseptics we used to use like H2O2. Within 24 hours, a sutured incision will have one layer of epidermal cells already. It will probably take up to 2-3 weeks at the most. When are the stitches due to come out, or was another method of closure used.

14 days: usually 14 days for wounds to be healed up- follow instructions from your surgeon