Sorry for the late reply. I've just tested it in 1.20.1, and it appears to be working as intended. If the data pack you moved into the folder is still zipped, try unzipping it. Unless that is not the case, I am not sure what could be causing that problem.

Each individual pack has a compatibility pack for Terralith (except the diamond geodes, which are compatible straight out of the box), but currently the all-in-one does not. I will be configuring the all-in-one compatibility pack soon.

Edit; You can now find an all-in-one compat pack here: www.planetminecraft.com/data-pack/tbm-s-terra-ore-geode-series/

Upon a preliminary look at the two, I see that the following are compatible:

Arboria - Diamond and copper geodes

Geophilic - Diamond, copper, lapis, and iron geodes (to some extent; only windswept iron geodes will spawn if used with Geophilic).

If you were to use this pack with either of the two—should it work that is— loaded above either of those two packs, it would overrule their modifications to the biomes, meaning that they will appear as they would in vanilla but with the geodes in there.