Welcome to the forum, @wstewart27. I’ve moved your post to a new thread.
Sorry to hear of your hardware failure. That’s always very frustrating! What happens when you try to run Steinberg Download Assistant on your new Mac? SDA requires Rosetta, so you might need to make sure that Rosetta is installed (that should happen automatically, the first time you try to run or install software that is not yet Universal).
In any case, you can also download everything you need to get Dorico back up and running from our web site here:
Make sure you install Steinberg Library Manager, Steinberg Activation Manager, and Steinberg MediaBay from the top of that page as well as the Dorico application installer and all the sound content.