acctually someone here selling a bmw 2000 323i , and its damaged at front left fender and little on bornet and bumber , can u tell me how much will be to repair it

Nobody here can tell you how much it costs to repair any car with collision damages without looking at the car itself up close.

You also did not state which part of the world you are located (I suspect you're in the UK), making it even more difficult.

Get the seller to get the car to a bodyshop (preferably BMW) for a real quotation.