The Object can be found under Admissions and is titled: Candidate Detail.

You can add the Display Field of Financial Aid requested to your List by:
  1. Selecting the Display Fields Tab
  2. Click Select Fields
  3. Expand User Base > Candidate > Candidate Detail
  4. Mark financial_aid
  5. Click Select
This will display as True/False

If you want to only filter on if a User has requested Financial Aid, within Global Filters select the Filter of:
Candiate Detail.Financial_aid is True