Please specify: Do you have the status of a recognized refugee? Have you applied for asylum and has this be granted? If the answer is yes you have the right from this date on to apply for child benefit if your children do live in Germany.
Please see this site for detailed info of the requirements:
another request for specification:
Are you asking for long term financial support by the German state?
Or do you have to satisfy urgent currend needs, so that a privat supporter could help as well?