Xp = use the xp perk and just do everything that rewards xp , mud up , mark items on the map for other players , if you can try and headshot as much as possible and knife enemies, just complete missions plus secure bonus objectives and pred bodies. As pred try and mark targets with thermal , if they are camping in a building land on the roof and after a few seconds it starts to give you xp for being close to fireteam and I think long claims give more xp aswell , if you are confident let fireteam reinforce.
As for V ? Either scout the map while doing missions and it will slowly build , or solo private matches which also letd you earn xp and V . If you are really struggling? Do a custom match and boost resources/perks and use uav , it will show you all loot locations and just speed run . The daily and weekly missions you can mostly do along the way . Its more fun playing the actual game and not farming though