Product Type is a category for the product that you can use to organize products. You can also use it as a condition to create an Automatic collection.
Step 1: Go to the Shopify Admin panel.
Step 2: Click on Products->Add products.
Step 3: Enter product details.
Step 4: In the right-hand side panel, you will see sections for Product organization.
Step 5: In the organization, you can see product types.
Step 6: Click on the type and add the product type and save the product.