Unable to answer "What’s the house number of this building?" – Residential Building – https://osm.org/way/1452164331 via StreetComplete 62.2:

North-west side from west to east, from 1 to  including 8 (other pic)
North north east side, from west to east, even numbers from 2 to including 22 (pic taken against the sun)

Attached photo(s):
https://streetcomplete.app/p/324901.jpg
https://streetcomplete.app/p/324902.jpg