So I was the authorized user for one of my dad's credit card account LONG time ago, but he decided not to pay his bills for some reason. It got sent to collection agency and its showing up on my account, my score dropped big time because of this. Is there any ways I can get rid if it? This happened a year ago. My FICO score is at 629 right now, I really want to get a mortgage loan in a couple of years. I've heard a lot people saying I need at least a 680 to get a decent rate, what would be my best interest right now in terms of raising my credit scores?