Hmmm, I'm not sure exactly what you are after. You can obviously keep a note of the score you had at level 80 and then work it out yourself. Of course you can go up and down, especially when a level set is fairly new. Also there are the in game keys to help see where you currently are on a level (F8) and a summary of the high scores (F12). These with the high scores, ranking with histories (ie coloured based on movements), score profiles and top score summaries give "enough" information.
Okay, there is one feature that you may want to know about (which I just reaslised was not published). You can (as of the colouring in the rankings) get the rankings as they were every 6 hours (subject to regeneration based on tickets and games out of order). You need to add an "&X=10000' where the number is measured from 1997 when the server first started recording games! As an example http://bd4.amristar.com.au/rank.phtml?&g=7&a=rank&X=10310
This is probably all you need.... and a record of when you first got through level 80 (from it's full high scores or you local recorded games (autorec directory)). I will add a selection to make this page more user friends. In the meantime I'm adding other pages but have little time and spend most bd4 time trying to get 1000 pointers