Would have to make a system to do so. Would probably make a folder in your custom logs folder and setup commands when bits are donated to record the amount and add it to the user's text file. So in all, you would use @readfile@ (for !support), @savefile@ (for when they donate bits), and @calc@ (to add any new donations of bits to their total in the .txt file).
I may look into working on a system this coming weekend. But a good user to ask would be TheRealAlixe on our discord if you want something right away.