That's the magic question most of us have and is really depends on your total number of your issues submitted to the VA and severity of those circumstances. Some get to sign the 199 rather quick, but some wait longer, i.e. 1-2 or 3 months rather. It's a waiting game now. I was found unfit on 6 Dec and VA received my packet on 12 Dec.
This is what I gather on this forum.. and some will provide a more precise timeline.
What they tell you on the phone? The timeframe for ratings after unfit is about 30-60 days maybe sooner, and about 2-3weeks after that you should have your 199 signed,