Guild Wars 2

Do i really need the ascended items to be competitive in pvp/WvW?
If yes, what is the most quick way to get them, Raid Dungeons or reach the maximum lv. on professions?

Ascended items are only necessary in fractals, no other game mode requires ascended, not even raids need them. Fractals are also the quickest route to ascended armor, with Ember and Bitterfrost being the fastest for accessories.

Well technically you can get ascended armor pretty fast right now through ranked spvp. You don’t really get much from Tier 1 fractals. Also, if you have laurels saved up and some wvw badges, you can pick up all your ascended accessories from WvW vendor, asuming you just want the basic old stats like zerker and what not.

If you’re into open world high end (not end game) content then yes, as someone already mention that the faster way to get them is thru reward track plus lots of luck or participation in league (which is a new feature this season i believe) although there is another way/option to get them that already mention above was thru fractals and raids if you’re into/not Transformer like armor thing, and as far as they (talking about player vs player not Structural pov) affect pvp? i’d say very much yes because of slight statistical advantage, not much cos foods and enhancement can cover that matter but still five points less is valuable to me (Bring back Dragon Revelry Starcake please) though if you’re a statistical persona; i suggest you get them thru crafting, takes month/s because time gated materials (looking at you Charged Quartz Crystal) but the satisfaction when completed is beyond imaginable i tell you.
Also laurels speaking of Ascended accesories if you’re a patient one (which i believe i lack?) that you can get thru daily login rewards (best reward ever) if you cannot find guild to do guild mission; i suggest that. But first aim for Exotics

Edit: Added* for accuracy and more Critical ratio

You do not need ascended item stats to be competitive in sPvP.
All you need for sPvP is to have any rarity armor on to have your effective defense stat.
SPvP pulls it’s stats into the Amulet you select in your sPvP build window, that’s it.

WvW can still be competitive even wearing exotics, but there’s less room for failure. Ascended armor will hold stat boosting infusions for WvW too, boosting offense/defense more.

The fastest way to get a full set of armor would be to craft it. This is the expensive route.
You can only get 1200 Asccended shards from PvP this season, so you can buy 5 armor pieces. (This armor can’t currently be stat swapped though, it is bugged)

The only ascended item I’d really recommend you is a weapon since 5% more damage really isn’t neglectable. Jewelry is also pretty good to have and fairly easy to get, at least rings and amulet.
Armor only gives you an insignificant boost and really isn’t worth the money you pay for crafting materials imo.

Also as said above: item rarity doesn’t matter in PvP.

ascended gear is necessary in fractals and competitive in Wvw roaming anything else in Wvw or anywhere really is not essential but it does give a decent boost.

only armor in pvp that matters is boots legs and chest and only in that you are wearing it, the stats don’t matter.

In addition you can also get them thru main story line if you’re a solo player as you progress (while early game was all exotics) further, including living world and expansion (I might be wrong on expansion one) by Scavenging as mention above they require a massive gold sink, by doing so you can also have a little back ground in the game that it was built for pve purposes and the story telling is top notch and a lot of plottwist, if you’re into it I suggest also that go buy their books.