Depending on how you format your data, just use $read() with the s or w parameter to search for the line with the right nick in all files and add the values together (possibly using $gettok() depending on how your data is formatted).
Basic example that would need adjusted based on your data:
alias AddScores {
return $calc($read(file1.txt,snt,$1) + $read(file2.txt,snt,$1))
}
Use: //echo -a $addscores(somenick)
Of course, you don't have to put that return line into an alias. You can replace return with /var or /set or /msg or whatever and stick it into the rest of your script. This is just an example that can be shown without knowing any of the rest of your script. Also, this assumes that data is in this format:
nick score
Btw, seeing who gets the most points in an hour is checking data, not updating data. Updating data would be adding new scores for the person. The combination of how often data is added + how often data is checked would be used to decide if something is accessed often or not.
