I've been really congested for over a year now and has been spitting up brown mucus and is always congested is it an infection somewhere?

Sinusitis? You could possibly have chronic sinusitis. At this poiint you need to see your doctor or even an ear nose and throat doctor to pin down the diagnosis and treat it.
Bronchitis. You might have a condition called bronchitis, which is inflammation of the air ways. The major component is inflammation , which get excecerbated with infection with bacteria or virus. Discuss same with your physician or a pulmonologist.
Not necessarily. As your symptoms have been present for over a year, it is more likely chronic bronchitis. This is a form of chronic obstructive pulmonary disease (copd). If you are a smoker, you should quit. A visit to your physician is in order both for definitive diagnosis as well as treatment.
Possible bronchiecta. If you are ecpectorating brown mucous for awhile you may need a chest xray and pulmonary eval for possible abpa or asthma. If the xray is abnormal you will need a sputum culture and further evaluation.