US Immigration from Ghana

Finally after almost 2 years of waiting for an interview, the Embassy in Ghana has received our case and we have our interview on 10-18th! I was wondering what information / documents will be provided , assuming he is approved. Will they request a SSN for him, he will be coming to the United States? I was also wondering about his workers permit, I've found some information online but still not quite sure what we will still have to process after his entry. If anyone knows the steps on him actually becoming a US Citizen as well, we are an Ir1 so not sure if its different for every Visa class?

Please when resubmitting a document NVC rejected does it take another 2 months before they approve or it takes lesser time than before ?

Our I-130 visa application was approved on July 1, 2020, over a year ago. We are still waiting for the interview at the American Consulate in Ghana. I understand that there was a delay due to COVID, but it is very discouraging to wait this long. We are eager to be together. Is anyone else having this problem?

Please does my petitioner needs to submit all the 12 pages of Afidavit of support or he can upload some?
will NVC reject the AOS if all are not uploaded

I was married before but he got denied visa after interview. I m now divorced and in a new relationship wanting to file K-1 and don t want to make the same mistakes. I ve attached here my email exchange with the embassy so I can get understand what I can do better with providing this time around since they were very vague in explaining what evidence they wanted to see from us.