Enginge oil leak, '03 Ford Escape v6

before the cat converter in the exhaust manifold and after the cat converter for bank 1

High idle is most often caused by an engine vacuum leak, use a can of carburetor spray and spray it around the intake manifolds (upper and lower), if there is a leak you will hear a change in the idle speed

Its usually the high pressure line that goes bad ! Replace it ! Try you tube !

Suggest a blanket and a really good flashlight, maybe some spray "brake-clean".
Find a way to get your car up in the air so you can see where the oil is coming from. I sometimes drive one side of the car onto a tall curb to give me ground clearance.
Crawl underneath.
Look for the leak.
I think a valve cover gasket or a leaking oil pressure sending unit is more likely than the front seal.
Being super careful not to spray your eyes, the spray "brake clean" is used to clean the area around the leak so you can see it better.
You can fix either of these two items yourself.
Be Blessed.

Bank 1 is located right after the catalytic converter, and it hosts cylinder numbers 1 - 3 - 5 - 9, whereas Bank 2 is on the other side, and it holds cylinder numbers 2 - 4 - 6 - 8.

It may be coming from the top of the engine and dripping down. I'm assuming you inspected under the vehicle and ruled out a leak around the oil pan gasket and front/rear seals. Check the valve cover gaskets for possible signs of leakage. It is really hard to pin point where the oil is coming from via chat without actually looking at the engine itself.

chack ALL the vacum lines on the engine.they are notorious for becoming oil soaked and leaking.if you have a vacum leak it will cause the engine to run lean.

V6 1-4-2-5-3-6 back bank pasenger side right to left cylinders 1 2 3
front bank passenger side right to left 4-5-6
4 cly 1-3-4-2

Ok, check the head gaskets for damage and the valve cover gaskets as well. replace any gaskets that are visibly worn. check the oil pressure switch as well. this is a leak spot.

Yes, most cars and trucks have 3 cats when they are V6's or V8's. Yoy have one cat on each header bank and then right after the two headers become one there's one more.

Good luck