What are we to do when there is a duplicate question (almost identical) with no answers? Check out these two questions:
Magento2 - How can I display a product attribute value in Order Summary block?
Magento2 - How can I display a product attribute value in Order Summary block?
Yes they are two different questions.
It looks to me that the second question was a copy and paste of the first with a few small changes. The person who asked the question has also commented on the other question, so they must be aware they're asking a duplicate question.