Draw the circle (or path).
Remove fill.

Write the text.

Holding Shift selection text and path.

In window
  Text >> Put on path

You can select text and rotate it

Shift+Ctrl+F

https://www.youtube.com/watch?v=0SknqPHIXRQ
Two Ways to Curve Text with Inkscape

Select object...
  Documents Properties (Shift+Ctrl+D)
  Resize page to drawing or selection
  Change text color.... if needed