I need someone to help with Facebook Pixels

I recently opened a Shopify store and I’m trying to post ads on Facebook. I created a pixel. Then I inadvertently created two more. When I’m in ad set the original pixel shows up but it’s not listed as a pixel in business manager. Also, the pixel attached to my Shopify store is one of the ones I inadvertently created. I need help getting this sorted out so I can post some ads.