Where you from?
Its pretty simple to take off and put back on.
I personally would be questioning 'why has it dropped?'.
But anyway, there are two bolts (one at each side) in the front wheel area behind the plastic arches. Also the plastic arch will be held to the bumper at the bottom, From memory i think it is a t20 ot t25 screw.
Then there are 3 bolts underneath the front of the bumper. If you go to the front of the car and pop your head under neath you should see them. Best bet will be to use a socket set, i think they're 10's maybe 13's. As are the ones in the wheel area.
Once all the bolts and screws are off dont worry about the bumper falling off. It will still be held on by two white plastic prongs that come out the front chassis of the car. Its just a simple case of pulling it forwards to get it off.
Refitting is the reverse of removal.
If you're jacking the car up make sure you also use axle stands.