You can manage & track your card collection and decks once you create an account and login.
Infiltrator
Set: Titan Masters Attack
Number: 17
Super Rare
8★
If I have one face up Secret Action and one face down Secret Action, do I get +2 attack or +4 attack?
You get +4 attack. The 'or' in "face up or face down" should be read as 'and/or'.
Source: Aequitas Rules Roundup 2021-06-03
If I have Secret Actions in my hand, scrap pile, under a character, or even in my KO area (say because of Daring Escape), do those count?
No. Pounce counts only the Secret Actions in your played area.
Source: Aequitas Rules Roundup 2021-06-03