have a look at install | darktable section macos.
If there’re older macos versions used you might have also a look here: darktable 4.6.1 for older macOS versions (10.14 & 11.3)
darktable runs fine on macs with macos > 10.14
Good starting point: https://youtu.be/GxUu2g1vNQU?si=ZAWGzozn3Hxc8x6e