Basically it is text - on - a - circle but..
Do you want regular text - which is easy to do
or
Do you want a graphic image as shown in your example - not so easy to do and Inkscape might be better than Gimp.
Edit: This a comparison
(1) Using the text tool create a text layer. Make a curved path. With text layer active, Layer -> Text along Path makes a new path of the text. Make that a selection and paint.
(2) The sort of graphic you can get from some website: Filters -> Distort -> Curve Bend will bend the layer.
Edit2:
(3) As the next post Ofnuts bend-path plugin is a good bet,
(4) This not Gimp, came from Inkscape.
Do you want regular text - which is easy to do
or
Do you want a graphic image as shown in your example - not so easy to do and Inkscape might be better than Gimp.
Edit: This a comparison
(1) Using the text tool create a text layer. Make a curved path. With text layer active, Layer -> Text along Path makes a new path of the text. Make that a selection and paint.
(2) The sort of graphic you can get from some website: Filters -> Distort -> Curve Bend will bend the layer.
Edit2:
(3) As the next post Ofnuts bend-path plugin is a good bet,
(4) This not Gimp, came from Inkscape.