Credit Repair Companies

How can you raise your bad credit score even when you pay credit cards on time and have collection accounts on your credit

I have a really bad credit score from over the years. I am recently trying to repair it and was wondering if I can get a boost from somewhere and how long will it take?

Is credit rating a big deal in the Philippines? Would a person be denied employment or promotion due to bad credit score?

Truthfully, would you ever not marry someone because of a really bad credit score?

I have some overdue bills, and no credit cards is it possible to still have a bad credit score?

I have bad credit, I let someone borrow money from two of my credit cards and they stop paying them for like 3 months.( how irresponsible of me, i know) I had to start an account with one of the debt consolidators to make one single payment a month on both those credit cards, the interest for nonpayment where so high my payment on every card was like $500 a month, ridiculous!
Now I have a really bad credit score. How do i fix this?

For the FIRST TIME I forgot to pay my credit cad bill and it was exactly two hours late. Am I going to have a bad credit score?

For the first time, I forgot to pay my credit card bill. Is going to have a bad effect on my credit score even if it only happened once?

I found a house that is a really good deal, it's like 40% off market value, so I'm sure it's a really good deal. But my problem is I have a bad credit score and I'm self employed. I feel like I won't see a beautiful house like this again with this price. What can I do? Please help.

I've heard that when places pull your credit score, it can lower the score. I currently have no credit, but I just applied to lease an apartment. After they check my credit, will I then have a bad score because they pulled it?
If I were to suddenly apply for multiple credit cards or personal loans within a short time frame, would my score be lowered (considering I currently have no score)?