Both are dead or very nearly so. I doubt there is anything you can do at this stage to save them (and the spruce is not worth saving even if you could).

Severe scale infestation and the associated black sooty mold. Too late to save the one with those insects.

'Smaragd' arborvitae and dwarf Alberta spruce - 2 very popular items that are not without their characteristic problems. Posts asking about the arborvitae browning out are frequent, it is more prone to root rot than usual but otherwise many questions involve recent plantings. Ones where the stock could have been allowed to dry out before purchase by the end consumer. For instance while sitting on a pallet inside a heated buying club warehouse.

As for the spruce it is prone to sucking pests, with dead sections like you are seeing there being as a result typical.