Is "Scream & Shout" included in "Orphan"?

Same question on My Only Wish (This Year)

Also, would suggest checking her ukmix chart page also - it has ore information on her sales
https://www.ukmix.org/member/35001-instinct

https://www.ukmix.org/forum/chart-discussion/artist-chart-analysis/106542-britney-spears-charts-sales-history
Sorry this is

Britney had revival of streams since free britney introducing new gen to her music. And she said she wants to make music. If she plays her cards right, she can have a hit era again. Bcoz people are interested and she has support by her side. A career comeback hopefully, nearly 24 years into career will be wonderful

The only problem I see is that is it physical or digital copies?

Yes !
https://chartmasters.org/2019/04/streaming-masters-britney-spears/

Is it just me or did Britney's total CSPC units randomly increase?

I remember seeing her below George Michael just a few days ago and now she's ahead of him by quite some margin.

The streams of All artists are automatically update everyday. Britney naturally gain more streams than George.

Probably was just a glitch in the auto-update counting. It happens to artists regularly (sometimes the total jumps up too high, sometimes drops lower, sometime freezes)

How did you get sales from digital singles?

In The Zone has reached 13 million CSPC units. Nice!

Was just about to comment the same. Valentine’s Day milestone.

According to the Guardian from late 2008, Blackout sold 3.1 M copies WW by November of 2008, that gives it a 26% boost to the total you put for her pure sales.
Here is the sales source: https://www.theguardian.com/music/2008/nov/28/britney-spears-circus
Not to mention all pure sales afterwards.

hoping for an update soon as we approach 3 years since last one!

Are the "Box Sets" like (Britney / In The Zone) included in the albums?