Hello @Jessica549,
Just so as we're clear, I presume that you're the co-host for a listing and that you wish the host, the person who owns it, to pay you for cleaning expenses.
The host can set up the payouts so that you get the cleaning fee as well as the 50/50 split of the accommodation payment. If the host promised to do this and hasn't then you'll have to contact them to ask them to set it up.
You could click the "Contact host" link on the listing's page and send them a message that way. Otherwise you'll have to use any email, phone or other contact information you have.
Steve.