There is no export room

please i needd a help my game talks all the time that there is an export room as I can make one this is always in the factories I put

That means you are producing more Items than you are using. Check your import Priorities on the slots that use those items, change them to local only, and they should pull from that location what you are producing.

Also, make sure the export slot is linked by overhead conveyors to the location that uses those parts. I missed that when I first started out.