H1B, H4 Visa

02/19/2019 - Biometric
02/20/2019 -

10:00 AM was the interview time, I reached at 9:00 AM.
After all security check I was in the queue @ 10.00 AM

Got Counter no 11:
3 people before me:

1. Lady with kid for H4 - approved

2. Lady - rejected
VO : how much you earn ?
Lady : 30000 as its a startup company ?
VO: 30000/annum ?
Lady - yes, no ( both smiled )
VO: sorry, this time your visa rejected.

3. Man - rejected
VO: why are you visiting ?
Man: Business purpose
VO : How many weeks ?
Man : 3 weeks
VO: explain the requirement...
Man: blah blah blah ... too much talking
VO: sorry, this time your visa rejected.

Now My turn, scared but confident, had decided will treat this as normal conversation:
Me: Good Morning Officer
VO: Very Good Morning
VO: So you are going for company xxx ?
Me: Yes
VO: For How much time working with this company ?
Me: Its a new opportunity
VO: so, its a new H1B ?
Me: Yes
VO: What is your position ?
Me: Told as par LCA and I-129
VO: How Much Salary you are getting ?
Me: Told as par LCA and I-129.
VO: What is you highest Qualification ?
Me: xxxx
VO: Do you know your rights ?
Me: (Smiling) Yes was going through outside...
VO: Yes, they are running videos... do you want pamphlets ?
Me: Yes, it will be good
VO: Smilingly gave me pamphlet
VO: How do you know about this opportunity ?
Me: My friend referred me.
VO: How do you know this friend ?
Me: Basically he is my college friend and he is Indian.

VO: your visa is approved, have a safe flight :)
me: Thanks

My whole body were having goosebumps.

Left the area, came out by 10:25 AM

02/21/2019 10:00 AM : Admin processing
02/21/2019 2:30 PM: Issued

now my question to community...
I have not received any mail or message regarding collection ? when should I expect this ?