The achievement itself will show your character's progress.
Personally, I track my progress by the number of script scraps I have in my bank since these sorts of things are tracked per character (So a single character has to consume them all to get the achievement to unlock the reward rather than simply consuming the required amount across your entire account).
So naturally, I've just been stockpiling them until I get the 50 required and then I'll eat them for the achievement.
SilverBride wrote: »The only way I tracked was through the Skills window because it clearly shows just what that character needs.
Then I made a spreadsheet and that made it easier to see what all my alts needed in one place.
I also ate the scripts as soon as I got them because once one character knows a script the rest can purchase them at a much lower cost when they become available at the Scholarium merchant.