Presuming I understood your question correctly, and you *filed* for bankruptcy, but voluntarily dismissed the filing and never actually *discharged* any debt in the bankruptcy proceeding, then there may be some mechanism by which the bankruptcy should not actually be reported. I'm honestly not sure. I'd recommend consulting with an experienced bankruptcy attorney in your area to see what, if any options, you may have.
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The bankruptcy will remain on your personal creditor report for a period of ten years. Since your business is a sole proprietorship then your personal credit will likely get mixed up with your business credit. Consider forming a separate legal entity and build credit for that entity.
This is general advice based on limited interaction in an online forum. The reply does NOT create an attorney-client relationship. You are strongly advised to seek the advice of an attorney in your jurisdiction after you have presented them with all of the facts.