John and you went to the store is correct.
Since this web site has the annoying policy of changing "I" to "you" when you ask a question, perhaps you meant to ask whether John and I went to the store is correct.
That is also correct because it is in the subject of the sentence.
The way to check whether John and I or John and meis correct is to remove the Words "John and" from the sentence and then see if I or me is the correct Word.
Correct: I went to the store.
Correct: John and I went to the store.
Correct: Mother sent me to the store.
Correct: Mother sent John and me to the store.
All of the above is correct but a more common form of the sentence would be "You and John went to the store." Start with "you", it is the person you are talking to.
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