It contains three versions of the film dumbass.
The one that is first on the dvd then - I dont think his instruction was unclear...
Kidding aside, Apocalypse now is probably my favorite movie, or at the very worst top 5. I think one model is to watch the theatical cut first, assess it and then watch the different other cuts to see what it adds/takes away from your experience.
For example I liked the Redux version with the french planations scene, it added an extra layer of surrealism, strangeness and hopelessness to the film for me - However the narrative is that it doesnt "fit in", which to me shows that you have completely missed the point of the film - Specially how it ties into the original novel "Heart of Darkness" (Which I very much recommend you to read, although it is depressing as fuck), but I digress.
I watched the 5 hour version even, i think that one is probably too disjointed.
Alternatively you could start with "Final Cut" which is Coppola's prefered version and the newest one from 2019, and then go from there, but this is the newest one and with probably the best quality regarding presentation - I appreciated the grainyness of the original film.