The rear bumper is plastic. The scratches to the front should polish out with some compound . You can get some Farecla G3 from
Halfords and possibly some 2000 grit wet or dry . The front scratches may just polish out using some cotton cloth and G3 . If the scratches don't polish out you may have to flat them , but be careful. Polish up with compound afterwards.
The rear bumper needs spraying .
If you are any good at spraying with an aerosol can you may be able to get an aerosol repair kit from a dealer. Phone up your nearest dealer and ask for the parts dept . They should be able to tell you what the colour of your car is from your registration number and whether they do a repair kit for that colour .