There's a few things you can do now.
First, I'm guessing by your scores that you already pulled your CRs from all 3 CRAs here. Good first step.
Next, I'd become a nerd about this and also pull each CR directly from each CRA. Sounds redundant, but there's info on those reports that are important for credit repair. You can get copies for free if you've been turned down for credit recently or you an also get them for free once a year if you go to annualcreditreport.com.
I'd then write down every bad or derog item (lates, CAs, COs, public records, etc) shown on a sheet of paper. Write out the amounts. Also write down when each account is scheduled to be removed. On TU and EX, there is an estimated date of removal. Write that down.
Then start repair. For each CA, send a DV. For each CO for an OC send an OC letter. For lates, send a GW, etc. Except for the GWs, send everything CMRRR. Addresses are on those reports. I'd also start saving money. Be prepared to pay if necessary via a PFD, but you are not at that point yet. Avoid disputing via the CRAs if you can. Unless something is way wrong, don't do it. It'll take the next 2-3 months to complete these letters, but your score will rise. If an account is scheduled to be removed in the very near future, I would wait in sending anything to them.