FICO score question

How do I know what past debt to pay off first in order to raise my FICO score FAST? Is it true that I should pay the most recent items first? Thank you
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i would negotiate to have the most recent or less than 2 years old accounts removed from my report if i pay in full right notget signed on compnay letterhead agreement before you make payment in full if they will not remove it, pay it anway and, it will show zero balance which will help your score. anything more than 5 years old i might ait out for it to fall off or validate and dispute the debt hoping to get lucky my negotiation travails