Credit Score Management

What is the minimum acceptable credit score when applying for a job where the employer checks your credit?

I am trying to repair my credit by sending debt settlement letters to the collections agencies listed on my credit report, but they are not being cooperative. Most are saying they CANNOT settle the debt nor are they willing to delete the listing from my credit report after the debt had been paid. I don’t trust any of these non profit credit counselors, but I need some guidance. I am begining to lose hope that this is even worth the distress. Any advise?

I would like a reputible company, I am trying to repair my credit for a home loan.

What are the cheapest reliable credit score companies where I Can get that efficient credit score that I need? I need to know what my credit score is so I can start looking for an apartment. And I know it must be terrible, but I just want to make sure that it isn’t tooooo horrible.
Thanks.

Trying to repair my credit,I do not want to pay someone to do this. What is the best way to do this, and where do I start?