Availability of MacBook Pro 2019 16-inch in Dubai Apple Store

Apple has not sold the 2019 models of MacBooks in almost five years. So no, it's not going to be available at any Apple Store. Here is what Apple offers now:

MacBook Pro - Apple (AE)

Regards.

if you are focusing on the 16-in MacBook Pro 2019 for its expected high performance, your should know that:

ANY apple-silicon Mac (even MacBook Air) with more than 8GB of RAM memory will run rings around any Intel Mac, including the Mac Pro 2013 version and your current computer. (except if using more than one External display -- in which case be sure to choose VERY carefully).