The pass score for IBM 484 is 63%, and for IBM 486 it's 67%. (But the PRIME practice exam site has a different pass score of 57% for IBM 484 at
http://ibmtesting.prime.prometric.com/)
A pass is a pass, it shows you know the subject area, any score above the pass is just a bonus. Anyway, I think
you should keep on learning afterwards, so the score on the day is out of date straight away. I got 77% for 484, and 90% for 486, but I wouldn't claim to be an subject expert just on the basis of the scores - there is much more related material that the exam doesn't - and can't cover.
[ December 23, 2003: Message edited by: Dave Cronin ]