The territorial gain has been... 50 meters?
There is now a dense fog of war over Avdeevka, but it seems Russia managed to take the waste heap of the Avdeevka coke plant - this is the dominant height of the entire Avdeevka garrison of the Armed Forces of Ukraine. Avdiivka has long been in the pincers of a semi-encirclement, but recent Russian activity has forced Ukraine to transfer additional reserves here, which came under Russian air strikes. It looks like Ukraine has no air defense forces left in Avdiivka; it has been bombed almost continuously for several days.
I think this is a distracting blow, but if Ukraine lost its dominant height in Avdeevka, this is a great success for Russia; this waste heap could not be taken for a year and a half.