US Immigration from Vietnam

Hi,

How long to receive NVC welcome letter for IR1/CR1 after case status changed to case was sent to Department of State?

Got I-130 approved on 02/17/2023

Case was sent to NVC on 02/20/2023

My fiance just arrived and I would like to know if anyone here knows of a place where she can learn english in the Houston area. Would prefer someone or some place that has experienced teachers who are bilingual in both english and vietnamese because my fiance doesn't know much english, just the very basics.

Does anybody know if the embassy requires the documents like birth certificate, police clearance, etc, to be translated ? There is not mention about translation on the website.

My fiance has made it to the US and I was wondering if form I-864 is still required? I only see people doing the typical AOS and related forms which are the I-485, I-131, I-785.

What is the necessary steps to take to apply for a social security card (get an SSN). Does this step get done after getting married but before applying for AOS (Greencard I-485)? Also does it cost anything?