Not in ACR by itself, but from Bridge you can automate a lot of ACR processing.
This is definitely doable, but I would think twice before scripting in Bridge. Adobe has done a terrible job of supporting Bridge scripting. When they went to the dark skins for bridge and photoshop about 4 years ago they broke the javascript UI for a number of controls including the dropdown, scroll, treeview etc rendering them useless in Bridge. This was identified in the beta and many times subsequently and has never been dealt with, rendering any scripts with a user interface useless. The javascript UI does work in photoshop.
The take-away is that Adobe does not care about Bridge scripting. I would not invest a lot of time in a Bridge script.