Raise credit score question. Paid off accounts how much will my score improve

I would like to ask about credit scores. my son and I are trying to improve our credit scores. my son paid off all debts on his credit reports ( all three) and I am working onmine too. His score was 515 554 596 mine is 503 520 544 with all paid off do you know how high this will raise our scores. And how long does it take to do so. Thank You so much
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just do not close the accounts
i would hope these are not collections only
if you keep good open, reported, credit cards and car loans.
and this is what you paid off your score could jump into the mid 600's
if you only paid off only collections and have no reported ongoing good credit then your score will not improve much at all.
so get and keep new good credit that has been open for at least one year for best results.