Adobe Master Collection is

not

an officially offered product by Adobe. Adobe doesn[SQ]t have a product specifically called "Master Collection." In the past, there were suites that bundled many Adobe applications together, sometimes referred to informally as a "master collection" by users or resellers. These suites were always given specific names, like Adobe Creative Suite (CS) or Adobe Creative Cloud (CC).

What you might be thinking of is one of several things :

*

A reseller[SQ]s custom bundle:

Some resellers might offer a collection of Adobe applications and call it a "Master Collection" to attract customers. This isn[SQ]t an official Adobe product and its contents would vary depending on the reseller.
*

A misunderstanding:

You might be thinking of the full Adobe Creative Cloud plan which offers access to nearly all Adobe Creative applications. This is the closest thing to a "Master Collection" that Adobe officially provides.
*

An outdated term:

The term "Master Collection" might refer to older bundles of Adobe software that are no longer available.

To get the full range of Adobe[SQ]s creative applications, you[SQ]d want to look at the

Adobe Creative Cloud

all apps plan. This gives you access to the latest versions of Photoshop, Illustrator, InDesign, Premiere Pro, After Effects, and many others.