Is it possible then to do?
Sure, anything is possible. Then you get to the question "is it worth the effort?"
I think there are 2 parts to this task of showing hi scores in the MaLa frontend:
1) obtaining the hi score info
2) getting MaLa to display it
task #1 is fairly straightforward and objective. The link that loadman gave us goes along way towards extracting the info from the files in the hi folder - no sense in reinventing the wheel. Some games only keep a single high score with no initials, Some keep scores with initials - some only the top 5, some the top 10, some keep 50, and I'm sure some don't even keep one, but I haven't encountered one yet.
task #2 OTOH is a bit more subjective - what I want to display may not be what you want to display and where/how I want it displayed may not match your expectations. Do you want a single high score? or the top 5? 10? with intials? Do you think it should be something you can plug into a layout? or should it be something that is accessible via the MaLa Info panel in much the same way the Histroy.dat info is shown?
I haven't figured out a way to get it into MaLa yet, but I'm real new to MaLa and having troubles locating detail instructions on all its capabilities. These forums help a lot - (it's a bit of a pain since the forum's search function requires the page to be refreshed when you click "back" after reading a topic)
I'm still trying to answer all those questions myself. Once I can answer them (for me), then I'm back to the question of "is it worth the effort?"