@FyreDrake76 There are 11 halla statues, but the quest to collect them all only requires you to find 10. You have to choose which doors you want to open (only one is required, and it only uses 1 statue, I believe. This is the door up the trellis in the garden, where the singer is). The others you can either save to open the 2 treasure doors at the end, use to open Celene's vault, use to open Celene's bedroom, use to open the garden door to get to the area where Varric is... They all require different numbers of statues to open, and it's not possible to open them all (unless you're on PC and use a mod or save editor). It's been a while, so there may be others I've forgotten.
If all you've opened is the mandatory door and the lower garden door, and you have found all the statues, you should have 7 left to open an extra door (or two, depending on the doors). Certain doors are necessary to open for certain outcomes of the main quest (who becomes ruler of Orlais), so I wouldn't get too caught up with getting all the coins or blackmail, it's easy to get high enough court approval without it.