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Welcome to the forums! You came to the right place for help.
Start by pulling all three of your free reports from https://www.annualcreditreport.com/cra/order.
Know what the DOFD and SOLs for all your accounts are. If you have any questions, post the accounts, leaving out personal information.
Who is reporting, the OC or CAs?
Settling collections will not improve your scores. And depending on how it is done they could after you for the rest.