2000 Lincoln ls v8 over heating?

It first happened when I was going around 55mph and now it’s happening when I let the car sit in the driveway at idle for about 15-20 minuets

You’ll need to get the radiator cooling fan operational if it’s overheating idling in park but not at highway speed. This particular fan set up is not DIYer friendly. - recommend professional diagnosis. ‘Some’ have successfully converted the fan assembly to totally electric fans.

It did overheat at highway speed

Yeah I read that it ‘DID’ - is that still the case .. here is a link for a repair shop within your zip code: ▪️https://repairpal.com/repair-shops▪️ Good luck with it!