The bad news is that rigid plastic tube that connects the main intake tube and the IAC valve is only available new as the entire assembly from Ford and is ridiculously expensive. The flexible elbow at the IAC valve often fails. If you broke the rigid plastic section and can't find a replacement at a salvage yard then you'll have to kluge/repair yours. Possibilities are J B Weld, fiberglass cloth and epoxy resin, or cut out the broken section and replace with intake hose of the correct inside diameter. The 1997 and 1998 engines with VIS have a different assembly than the 1999 and later models:
Air inlet hose fix? Don't expect the clerks at the discount auto parts stores to be an expert on your model - especially on parts they never sell because of only being available from dealers.
The screw you dropped may be on top of the transmission. I've dropped screws in that area and was able to retrieve them using a magnet on an extendable wand. I've been to several automotive fastener specialty shops trying to find an equivalent thread of those torx head screws and was unsuccessful. I think it was called a high-low thread. You'll probably have to go to the dealer for another one and may have to buy a set. I purchase my dealer only items online from Tasca Parts.
