Value is too difficult to be accurate without seeing the gun. Condition which includes the amount of original finish and original configuration will determine value. Recommend taking it to a gun shop for appraisal.
You will need to call Browning.
There are many things to consider. Age, condition, scope... Say $3-600.
$300-900 depending on condition, which grade, and which model Browning,
100-10000 USD depending on specifics.
At least 500 dollars for one in the condition that you describe.
100-500 USD depending on condition.
100-1000 or more depending on EXACTLY what you have.
50-500 usd
Only Browning knows.
It will be marked.
You must define what "BOP" means.
no they are not made anymore