As you may have already noticed by now, the lens has a shutter and aperture but no focusing mount so the you will probably need to make your own lensboard and attach it to a m42 focusing helicoid (check the auction site, these go for 20-40USD) to get it to focus. After that, you can attach it to a mirrorless camera via m42 adapter.
Having said that, you will probably find that using an LF lens on a small sensor mirrorless camera will give you unimpressing results. It's best to use the lens on 4x5 or at least 6x9 medium format cameras.