Hide the parent product
Once you've set your variations to be visible in the catalog, you may want to hide the parent product.
- Go to the edit product page of the product in question.
- At the top right, find the Publish meta box.
Where it says Catalog Visibility, click Edit.
Select Hidden, then click OK.
Your variable product will now be hidden from the catalog. Note: It'll still be visible as a single product page.