US Immigration from India

My spouse is in India and our I130 was recently approved and sent to the NVC. We payed the NVC fees and are no able to submit the AoS, DS 260 and Civil Documents. However, we are not sure if the police certificate is required to be uploaded right now or not. We asked a couple friends who recently went through the same process and they said they took the police certificate to the visa interview but did not upload to the NVC site. We did start the process at the local passport office in India for the Police Clearance Certificate (PCC).

If any of you have recent experience with civil documents, can you let us know if the PCC needs to be uploaded now or my spouse just needs to take it to the visa interview?

I have applied N400 application form through online . My home address is Dallas, TX , I filled the same home address . But Service Center is showing as NBC ( National Benefits Center) in general notices.

Online applied date: August 19th, 2020 and received Biometric Reuse date: January 20th ,2021. I am waiting for Interview. How to select Service Center?. Based on address they will send the notice?

What's the current travel requirements for a GC holder for arriving in US during these COVID times?
Can any share their experience of arriving in US from India?

I heard of RT-PCR negative certificate with QR code. How is the implementation on the ground?
Are there any other rules/requirements?

I have filed a petition for my parents. Their I-130 is approved and the case has been transferred to the NVC. The forms in the NVC will be filed soon but as I understand it will take some time for processing still. Even when NVC processing completes, I don't see my parents getting an interview date anytime soon.

The question I have is, during this time when NVC is processing the application OR when waiting for the interview date, can my parents still travel to the US on a tourist visa? They both have valid tourist visas.

any moment on Potomac Service location

we are waiting for NOA 2

our filling date is July 2020

did anyone see any moment