John's vision covers from about 90AD to the 2nd coming of Jesus, on throughout Jesus' reign, and then to infinity.
John wrote the Revelation before 70AD.
It's preposterous to think that the total destruction of Jerusalem, along with the temple, wouldn't have even been mentioned by John, had he wrote it after 70AD.
There is nothing to tie the scroll in Dan 12 to the book of prophecy in Revelation.
You posted a prophecy from Revelation alongside a prophecy from Daniel.
Do they both discuss the future? Yes.
Not our future.
Everything written in Daniel was fulfilled by 70AD.
Does the commandment given to Daniel regarding sealing the scroll have the slightest bearing on when the prophecies are fulfilled in Revelation?
That wasn't the point. The point was the 500 years and 2,000 years.
John was told not to seal his scroll because the time was near. John also said the following:
(Rev 1:1) The revelation from Jesus Christ, which God gave him to show his servants what must soon take place. He made it known by sending his angel to his servant John,