I have this scanner and it will scan but it wont pick nothin up

A couple of things could be involved in your problem. You need to be listening to the frequencies that are being used in your area, but most of them will not be transmitting all of the time. Something you can try is if you live maybe about 10-20 miles from an airport and your scanner picks up aircraft frequencies you can look up the airport and find the automated beacon frequency and tune that in. The automated beacon should be transmitting 24/7 the weather conditions of the airport.

Another thing to check is weather you have the correct antenna attached to your scanner and that it is connected properly, the circuits in your scanner may need that antenna to be connected for the circuit to function properly.

If you are using the scanner to listen to your local Fire Dispatch there can be days when there isn't anything happening.

Another problem could be that your local Dispatch has moved over to a new Digital System and your scanner isn't equipped to recieve that System.