454m was the verdict handed down by the judge. Trump still has the right to appeal, but he either needs to pay the verdict up front right away, or put up a bond to cover it while the appeals process goes forward.
The appeals court lowered the amount of the bond he would need to put up. The current issue is that the document that the bond company sent to the Court is not up to the proper standard, so the court gave Trump more time to remedy that. If he can’t, it’s possible the bond will get rejected.