Do I have to go to other alliance zones to level my VR?

Xetjar

Since the last boss in the main quest is way too difficult.
Is there any other way to level besides other alliance zones?

Cause my EXP bar has been on 0% for ages now, lol.

Genev

You can get VR experience from doing quests in the regular zones (which you wont have anymore if you leveled by questing), but it's not a lot and likely not even enough to get you to VR2.

For the rest, there's AvA which is incredibly slow.

Matrinka

If you want to level at a reasonable speed the answer is a resounding YES you do have to.