Answer"Ranger" as a name brand for a side by side 12 ga shotgun is not recognizable. Can you provide the actual manufacturer? Ranger is a name used by Savage at one time.
Depending on condition, up to $250. firstname.lastname@example.org
If it is side-by-side, probably Stevens.
Seldom exceed 100 USD
Stevens made for Sears Roebuck
it is worth 200,000pounds