If rings came with the base, they'll be a matched set. Use 'em. As it is now, your scope is not mounted correctly. One end is higher than the other.
You'll also have to bore sight. That can be as easy as looking though the barrel(need good eyes to see though a .22 barrel though.) at something about 100 yards away. (Street lights are good for that, but pay attention to who and what's near 'em. You don't want to be explaining why you're pointing a rifle out the window.) Anyway, look through the barrel, line the vertical cross hair up on something you know is square, and adjust the reticle to be on the light or whatever. Should get you on paper but you'll still have to sight in.
Whole thing is best done with a bore sighter with the rifle in a padded vise.