A one million dollar note with the serial number A12345678B is not a real currency in the United States or most countries, as the highest denomination of U.S. currency ever issued was $100,000. While novelty or collector's items may exist with such denominations, they are not legal tender. Therefore, it is likely a fake or a souvenir item rather than a legitimate banknote.
It's worth about half a cent for the paper. The U.S. has NEVER printed a one million dollar bill, so any you find is only a novelty, NOT legal currency.
The only way a NES would be worth a million dollars, would be if it were gold plated and studded with diamonds.
Some serial numbers represent unusual number patterns, but are only worth a few dollars. There would have to be some error on the bill and a collector willing to pay a high premium for it. This does not currently exist in the numismatic market.
A 20-dollar bill with one serial number is still worth 20 dollars, as the value of the bill is determined by its denomination rather than the number of serial numbers it has. Each U.S. currency note has a unique serial number, but this does not affect its face value. Therefore, regardless of the serial number, the bill retains its worth of 20 dollars.
Five dollars.
five dollars
Since you posted this under Winchester and the serial number is over 3 Million, I'll assume you have a model 94. There is a serial number list at the related question.
A billion dollars
100 dollars.
550-750 dollars.
The value of the Webley Mark 2 revolver with a serial number of 43383 varies with the condition of the pistol. This gun sells for about 450 dollars to about 1000 dollars depending on the condition.
twenty dollars