Can i still order a 2020 honda civic coupe even tho it's out of production but still listed on hondas website?

Unless you can find a 2020 Honda on a dealer's lot, you're S.O.L.

i would call them and ask them

You can only buy cars standing in the lot.  There could be some that are heavily discounted.  Good luck.

No.

You may be able to find a dealer that has it still in stock.

Or you can purchase a 2021.  It might be too late in the year to order a 2021. 

No.  You can find  one that has been manufactured but may be still for sale somewhere.