Scoring bug?

I have the Civ2 Classic Collection version of Civ and the highest score the computer will let me achieve is 320% even on Deity level. Does anyone else have this problem with their game & is there a way to fix this problem?

I think it's not a scoring bug. 320% is a pretty high score. You should be happy.

To : Thunderfall. Whilst 320% is a very good score at Emporer or Deity level, it is not so difficult at King level, just lengthy.
At any level the score goes crazy , usually into minus figures after passing 320%. This is not a major problem, but I cannot understand how your HOF shows much higher % figures at Deity level. As a separate issue I find it hard to believe some of the posted scores given the limited number of turns at Deity level.