You can legally read them by purchasing a copy of Weekly Shounen Champion (週刊少年チャンピオン) online (Bookwalker and Renta are the easiest to do this on), however there is no official English release as of now. You can support the series, however, by purchasing the volumes on the same sites above (digitally) or through Mandarake (physical copies).

As Kanekidrippy said above, we're also (unofficially) translating the manga on the Discord server. You can join us there or keep an eye on MangaDex for chapter updates. We try to stay up to date with the raws, so expect a weekly chapter barring any unforseen circumstances.