Four genuine bills on a sheet will NOT have the same exact serial number.
65 cents.
About $3.00
This is considered to be a major error. Values are in the $300-600 range depending on how much of the other bill is visible. It should be appraised by an expert in currency errors in order to get a more specific value. Although, you can purchase up to a 32 subject uncut sheet from the Bureau of Engraving and Printing and make your own "error". I have several uncut panes of 4 of one and five dollar bills.
16 dollars
Most of the 16-sheet districts sell for about $170. The 'I', 'G' and 'J' districts are much higher, as there were fewer produced.
moneyfactory.gov
8
You can still buy uncut sheets from the Bureau of Engraving and Printing. This is not an error. Value is $4.
roughly $750.00
Eight dollars.
If you have a 32 bill sheets they run from 119-359 dollars. Depending on serial numbers or early runs, they could fetch a lot more money.
About 26 wide by 22 high
$40.00 There are too many uncut sheets out there to be worth any more than face value.
If you had a sheet of uncut two dollar bills, they would be worth far more than just two bills. Depending on their condition, the bills together would fetch between $2 and $10.
$32 would be the value. You can buy bills in sheets through the Bureau of Engraving and Printing at moneyfactory.com
Please check your bills again and post a new, separate question. No US $1 bills were dated 1987.
Like the value of anything, it is only worth what someone else will pay for it!