Need to sort out the chaff.
First, get into the habit of mounting wheels on the ground with the bike (reasonably) vertical. This will allow gravity to consistently seat axles in the dropouts, both front and rear. If you've mounted on a worksrand or otherwise, simply loosen and retighten on the ground.
To check if it's wheel dish, flip the wheel 180 and see if it's now near the other blade. If not, the wheel is OK, but the fork may not be.
Regardless of whether it's wheel or fork decide whether it's actionable. By this I mean that if the bike rides perfectly fine with no tracking issue, doesn't have a high speed wobble or any other noticeable problem, your best option may be to leave bad enough alone.
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