Here's a better way of asking the question that I think may be on your mind:
I have a three year old chargeoff and a three year old collection on my report. If they were both removed, would my score go up?
The answer is yes if they were your only serious derogs. (An example of a derog that os much less serious is a Day 30 late, especially if it is at least a couple years old.)
If you had a number of other collections and charegeoffs, then the removal would likely not help.
