Hey there @Indra7777777. and thank you for reaching out!
You would need to update your listing with a MH format for it to be eligible for listing under the MetaHumans section. The format is created in MetaHuman Creator and packaged from there. You can see more on this process in our documentation located here: Asset File Format and Structure Requirements in Fab | Fab Documentation | Epic Developer Community
I hope this helps!
Thanks 