DoorLoop doesn't have a standalone security deposit report, but you can generate one from the Chart of Accounts.
Note: This view shows every security deposit that has been fully recorded — both a charge posted and a payment or credit applied. A deposit charge alone will not appear here. Owner-held deposits are tracked separately and won't appear in the liability register either, by design. For the full picture of where deposits appear in DoorLoop, see Verify Recorded Security Deposit Amounts Across DoorLoop
Steps
Go to Accounting > Chart of Accounts.
Find and select the Security Deposits category.
This generates a report showing all security deposit transactions.
