We have various peeks into real-world performance, though it very much depends on what you're looking for.
Geekbench is not real world, but it's worth noting that there's enough submissions now for
the Mac listings to have an averaged listing for the MBP. It looks good. It's Geekbench, so apply your personal biases accordingly.
The head of Affinity Photo has an M1 Mac (not clear which) and posted
the following benchmark comparison to a 2019 top of the line iMac with the 580x. The M1 GPU is obviously slower, but not by as much as you might think. And the CPU absolutely smokes it. You can compare other, user-submitted benchmarks at a link for the next tweet in the chain for other points of reference. Whether or not you use Affinity products, it's likely a decent stand-in for what the Adobe suite should look like when it's fully ported.
Jules Urbach, the CEO of OTOY who makes OctaneRender, claims that they can
"squeeze +100GB of floating point textures" into the 16GB M1 models, because essentially they can address the RAM as VRAM and apparently M1 uses a "unique HW compression" that is debuting to desktop GPUs with the Apple chip. Frankly GPU stuff is out of my paygrade and I have no idea how impressive that is or is not.
There is an M1 version of Blender on the way, but it's not out yet. Lots of speculation about when on the Blender forums but no authoritative answer. Soon?
Cinebench for Apple Silicon is, of course, out. But I can't dig up any M1 benches yet. Final Cut Pro is out now as well, and I'm sure we'll have numbers and such soon enough. Expect the latter to absolutely thrash every existing Mac, however,
based purely on how well the iPhone 12 already does. This is probably more about dedicated hardware encoding (I think?) then brute CPU / GPU force. But if you're primarily interested in real-life workloads, that shouldn't matter much.
Not real-world, again, but
someone has run an M1 Mac through GFXBench, which is a passable stand-in for gaming performance.
If you browse through the listings, that puts it about 40-50% faster than the top-end 96EU Tiger Lake IGP. Also bests the MX450, and hovers right around the performance of a GTX 1050 Ti Max-Q (which is the fastest GPU option in the 13" Razer Blade Stealth, for reference).