How to create configuration product in Magento 2
Login in to Magento Admin
Go to Product – Catalog – Add Configurable product
Fill up required details and go to “Configurations” section and click on create configurations
Select attribute that you want to use for configurable product and press on Next button
Select attribute values for configurable product and if not available create new value of attribute. and press on Next Button
Select images price quantity for configurable product and press on Next button
Check summary of your configurable product and press on Next button
You can see your product on your selected category where options are available that you configurable for your products