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Why don't phone the call centre to find out? I think they don't accept walk-ins.
 
What exactly do you mean by this question?

(1) is the office physically open as in, can I visit it and ask questions? No, the office is never open to the public. IRCC does not offer walk-in or appointment service for visa officers.

(2) is the office open so I can send an outland family sponsorship application? The office was never fully closed for this purpose. People have been sending applications during the pandemic.

(3) is the office open for biometrics? Biometrics appointments will be handled online when fully available and you'll be able to go to a Service Canada office to do the biometrics.

But in general, even when fully open, the Sydney, NS Case Processing Centre is not open to the public.
 
Thanks, I couldn’t find a number to call anywhere. I just wanted to know if the IRCC office had reopened, I sent in citizenship applications for my sons 3 months ago and hadn’t heard anything. Thanks to all who replied
 
Thanks, I couldn’t find a number to call anywhere. I just wanted to know if the IRCC office had reopened, I sent in citizenship applications for my sons 3 months ago and hadn’t heard anything. Thanks to all who replied

It's too soon. You would probably hear from them 2 to 3 months later.