Now it is working.
I addet this
load-module module-bluetooth-policy
load-module module-bluetooth-discover
to /etc/pulse/system.pa
and change AutoEnable=False to true and removed #
in /etc/bluetooth/main.conf
and install pulseaudio-bluetooth and removed the installet git-version
after a reboot now my headset is working..
Thanks for you help @dr460nf1r3