There’s many ways, doesn’t matter that much really (effort and consistency are more important)
Some popular splits (3-way split):
Push / Pull / Legs
Chest + Back / Shoulders + Arms / Legs (some people struggle doing chest + back on same day)
Chest + Triceps / Back + Biceps / Legs + Shoulders (one of my favourite variations)
You’d do this roughly 4 to 6 times a week (mostly, the body get’s trained almost twice a week). Just rotate through the workouts over the days (e.g. on, on, on, off, on, on, off etc)
I tend to only hit legs once a week (grow best with that and allow good recovery), others like to train less frequently, like bodyparts done once a week (e.g. with a more split routine…like Stu’s)