can we use configuration id to push .mof files,if yes then can you please tell how?

Configuration IDs are not needed in push mode. You simply push whatever MOF you want to the node. You need to perform that push by using the node’s name.

yes i know that config id is not needed in push mode but if we want can we try with pushing .mof using config id or it`s not possible at all?

No, push mode cannot use configuration IDs in any way.