@smoral12, welcome here.
Before you do below mentioned, please try to soak this switch with some WD40 or similar.
No success..?
If it's not a permanent fix do following:
-open your RH switch
-there are two cables which stop/kill your motor
-those are soldered into this kill switch
-extract and connect them
-isolate this connection
-test whether your scoot starts
-install your RH switch.
Try to get a good used one.