44.40 million metric tons [1]

Average American carbon footprint:

16 tons [2]

Now, I'm sure there's some inaccuracy here, and it's a bit of a stretch to say Bezos is personally responsible for all of Amazon's emissions, but he's pretty clearly in the same order of magnitude as having a million times the carbon emissions of the average American.

[1] https://d39w7f4ix9f5s9.cloudfront.net/26/7f/e1693ffc45db88d8...

[2] https://www.nature.org/en-us/get-involved/how-to-help/carbon....