Considering the results of your relevance query is saying that there was a Chrome entry found in the 32-bit branch of the registry (and none found in the 64-bit branch), I would have to ask whether you are certain that 64-bit Chrome is installed on that device?
Also, I think your query would only work correctly on a 64-bit Windows system.
If you run that query against a 32-bit Windows system with Chrome (obviously 32-bit) installed, I believe the result of your query is going to return “64-bit”, which would be incorrect. That would be because on 32-bit Windows “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall” is the 32-bit branch and would be where the Chrome installer would place the Chrome uninstall entry so your first conditional will evaluate to true.
If you want this to run correctly on both 32-bit and 64-bit Windows, you probably want to try this:
q: if (exists values "DisplayName" of keys whose (value "DisplayName" of it as string as lowercase contains "chrome") of key "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" of x32 registry) then "32bit" else (if (exists values "DisplayName" of keys whose (value "DisplayName" of it as string as lowercase contains "chrome") of key "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" of native registry) then "64bit" else "not found")