You need to put your songs on some sites (I dont think itunes takes everyone, but other sites do)
and then PROMOTE PROMOTE PROMOTE and get people to download your song
Be aware the market for jewish music is small and most of the money is made on the “simcha Circuit” meaning weddings and Bar Mitzvahs etc.
The only musician who really made it from the jewish music was Matisyahu. People like Avrham Fried makes his money from the simcha circut, not his CD’s