From the (partially visible) Compare result window, it seems your .recycle folder is not in the root of your left (or right) base location, but inside the Resources folder in your left (or right) base location.
In that case, you should exclude \Resources\.recycle\ if you just want to exclude that specific .recycle folder, or *\.recycle\ if you want to exclude all .recycle folders.
As explained in the
Manual pages on In- and Exclusion (first bullet), all FFS Filter setting are
relative to the root of the left and right
base locations.
A simple way to learn to use correct Filter rules is to, in the FFS GUI, run a Compare and then right-click on the folder or file to be In- or Excluded, and select the suitable In- or Exclusion.
You can then open the Filter setting and review what FFS has added as a filter rule.
