find CSV # of rows before making it's Verge list of list of rows?

hi
I have a CSV that has 3 columns of info, and about ~30 rows of those columns.
…but it will be ever growing, constantly updated into the thousands, of unique items.
Is there a dynamic way to have the list of lists of rows that will contain it’s info be DYNAMIC?

Is there a way to dynamically create those variables at the time the CSV data loads by somehow retrieving the current amount of rows of columns that the CSV has? (maybe a JS call?)

..OR do I need to create hundreds of individual variables when i initialize the list like i have for the ~30 ones i have now?
ie: row_0001, row_0002, etc?

thanks!