I personally think that they’re all worth watching, but it is worth keeping in mind that they’re mostly built to appeal to different audiences, so they’re not all everyone’s cup of tea (and some of them have/had production issues that did them no favours).
The idea of the current age of Trek being “Trek for everyone”, so that instead of the same show and concepts being repeated, there would be different shows, trying their own things, aiming for different audiences.
Discovery, for example, seems to have been aimed more for people coming off of the 2009 movies/contemporary sci-fi, which has a bit more in the way of melodrama, and action. It also seems to have been something of an experimental testing ground for what Trek could be, since the show tried all sorts of things.
Meanwhile, Lower Decks is aimed for older fans who want something lighter, with its heavy doses of references to older Trek, and much more comedic style.
Prodigy was aimed at a younger audience, letting them get into Trek on their own terms, with a modern show, compared to the Funimation-based TAS, which is much more dated.
Picard seems to be a bit for “passing the torch”, as it were (basically a repeat of what Enterprise tried, but in a slightly better way), as a way to integrate both the prior Trek series, and the current ones into one smoother, cohesive whole, opening up potential issues, and setting the ground for new concepts, that later series can dive into.
Strange New Worlds is basically a modern take on “RetroTrek”, putting down a Captain of the Enterprise, and the standard 5-year mission-type plots, and is probably for people who wanted more of the old shows, but with modern effects and things instead.