Squarespace & Instagram physical product shop set up.

NEEDED URGENTLY. We have a Squarespace website set up, and we are looking to add a physical product in there that also shows on Instagram. We are looking for help in someone setting up the product on Squarespace, setting up the shop on Instagram as well as setting up posting and shipping requirements and all that goes into dispatching physical products. May also entail setting up a shopify account for us if that works best.