Condition?
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Depending on model and condition 100-1000 USD.
Winchester model 100 (rifle) in 100% shape is worth $550.00 in the 308 caliber. Winchester model 100 (carbine) in 100% shape is worth $795.00 in 308 caliber. If you find a model 100 in the 284 caliber consider yourself lucky and buy it, dinosaur bones are easier to find.
It looks like you have listed a serial number, not a model number. You need to provide a detailed description that tells who made it, what type of finish it has, the barrel length, the caliber/gauge, engraving (if any) and all markings.
Can't be answered without knowing who made it, all markings, box, papers, accessories, caliber/gauge, long gun or hand gun, finish, condition, etc..
Gun Traders Guide lists a value of from $87 for "good" to $242 "new in the box", but that's not what they sell for in the real world. I have 34 of the 550 series and have paid as little as $25 through $500. On average a nice model 550-1 (most any year) will sell for around $250.00............