Perhaps you could begin by telling us which board you have... not just in the title too. Notwithstanding that I overlooked that, can you please supply links or details for the exact board that you have? Is it the "Arduino Uno Wifi"? Is it genuine or clone?
Also please tell us what you have tried so far. You are speaking very generally, "can't seem to use" and so on. What sketches did you write, or find to test it?