I just found out that my car engine has some plug in the side of it near the oil filter that is out so my car is leaking coolant as fast as you put it in. how big a problem is this and how much will it cost to fix? is my engine ruined and what would cause this plug to pop out

Sounds like probably a freeze plug. Not a big deal, certainly not indicative of a ruined engine, by itself.

Probably rusted out from the inside. They do that alot. Especially if the coolant isn't properly maintained.

It's less than $1 at the parts store; you just knock it in with a hammer. Pull the old one out first obviously, if it didn't already come out. Sand the edge of the new one where it will be touching the casting; sand the casting clean too; smear some sealer such as Permatex 300 around the outer edge, and just bonk it into the block until it's about 1/16" below flush with the surface.

If one of them rusted through, the others can't be far behind; expect more of them to do that over the next year or 2. Might not be a bad idea to find them all, maybe look them up in the book at the parts store and see where they all are; look at them, and see if any of the rest of them show signs of leaking yet; and make plans in the back of your mind as to how you're going to deal with them when they do, or how you're going to just change them all out before they do what that one did.

Thanks alot for the help i was just scared that it was some thing big. Do you think i can get to it without removing the engine from the car? Will this affect how hard i can run the engine?

I have no clue; I've never touched a 6-cyl in one of these cars; never even really looked at one.

No.