Sadly Dredd didn't make enough money to recoup their production costs, while it was in theaters. It's been estimated that Dredd made around $20 million in the Home Market. This means how many DVD and Blu-ray sales they made. I wasn't able to find any info on streaming numbers unfortunately.
I still hold out hope that a sequel is made and released before the end of the decade.
It's probably because I was drunk when I watched Judge Dredd in the theater, but I seem to remember liking Stallone in that. I thought that Dredd was just a worse rip-off of The Raid, but then I read somewhere that they basically co-evolved to a similar thing.
As a Stallone movie it's entertaining in a "brain off eat popcorn" way, same sorta feel as Demolition Man (which was fun). It's only once you understand the material that it's supposed to be adapting that you feel like you were cheated.