Welcome to the world of chickeneering!
I'm slightly concerned that you have bought your first chicken without first having bought a house for her... but what is done is done, and now we shall try to sort things out
OK... are you buying only one chicken? Chickens are sociable creatures and should only really be kept in groups of three or more, though two is OK at a push. How old is she?
Where will you be keeping them - in your garden or on an allotment? are you planning on having your chickens free range in this area, or do you want to have a fixed run for them to live in all the time?
Have you also bought the correct food? (layers pellets or mash) A suitable feeder in which to put it? A waterer?
You can use a shallow pan (old frying pan with a handle removed), or smiliar for feed and water until you buy proper ones for now, but it is important that you have proper chicken food.
You should be aware that most chicken houses will come flat packed, unless they are of superior quality, and if you buy something cheap now, you will probably end up having to replace it in a few months.
In an emergency situation (and that is what I would class this as), I would by a big rabbit hutch, tonight/tomorrow from a big petstore for immediate use, and then try to find more suitable accomodation for your chickens as soon as possible next week.
Most places will take a few days to deliver a chicken coop and run; which is why I'm suggesting a large rabbit hutch for emergency measures... a rabbit hutch certainly isn't the most ideal home for most chickens.
Sorry for all the questions, but you didn't really give us much to go on. If you give a little more information, you will get more information back