Cant get clutch bled, horn wont work or number plate lights

You might have to pressure bleed system if it wont bleed normally with tube .Take it no power at horn or lights ? If not the fuses you will have to trace backwards both circuits to locate fault though I would double check ALL fuses again .

Pump the pedal rapid by hand and hold down crack open bleed nipple let air out ,and repeat till decent pedal ,ensure resovoir stays well topped up ,in between pump pedal to build it up and force air out.or easier option would be as suggested pressure bleed system.