• Repeating Data Using Document Property Content Controls and Other Mapped Content Controls
• Repeat text in MS Word Using Document Property content controls (video by Laura Townsend)
• Repeating Data (Populating Multiple Like Fields) by Greg Maxey

You have a number of options. The most trouble-free in set-up and implementation is described in the first two links. The third link gives you a multitude of ways.


P.S. What you are showing in your image are not form fields but Content Controls. Finding information online about these depends on using the correct terms.