The throttle on my 50cc scooter is stuck, if it's the throttle cable how should i try to check it or fix it. (i have no mechanic skills)
You need to check on its cable. You do this by dissembling the throttle mechanism so as to see if the throttle cable is okay. Alternatively, you can take your scooter to a mechanic so as to have it checked and the problem fixed easily.
There's probably a kink in the cable or the cable is frayed. Sometimes a bicycle cable will be a good substitute. Work from the carburetor end upwards.