(06-29-2018, 04:25 PM)GerryZ Wrote: Im simple interested to show up thi window under the right bar as you can see in the picture
It is the fonts dialogue. It lists the fonts that are available to use with Gimp.
What exactly do you want to show?
If you do not want to see it, that tab can be closed using the little left pointing arrow.
or
It it can be used to select a font to use with the text tool
As the left side of Gimp toolbox and tool options
The properties, font size, spacing ... are shown in the tool options