Hi @capurehiyuy ,
Nick here from Shopify. Good question!
Once a product has been deleted it is permanently removed from Shopify and can’t be restored. Should a product be deleted from your store you would need to add it back to the admin again.
Shopify has a helpful guide for this going into more detail about it which you can read here.
Hopefully, this helps and answers your question. If you have any others, don’t hesitate to let me know.
All the best, Nick