@Anonymous wrote:
..... I don't get why sometimes fails the bold one or the bold condensed, when it's always the same font (although it is not a standard font) because on the layout I see as I wanted to be printed on the pdf (it's look a bit strange, but when I zoom in the fonts looks fine, and the ones that recognize the pdf, looks fine too):
That is because of the nature of the font you are trying to use. I believe it is Postscript font (not true TTF), which even is not supported in Windows version of AutoCAD, but still supported on Mac platform.
I'd suggest you to avoid to use such kind of fonts.
You can find out the type of TTF (OTF) font with Font Book app. Here is an example of Postscript kind font:
And here you can see how does it look in Text Style dialog in AutoCAD:

And here is an example of true TTF font in Font Book app:
And here you can see how does it look in Text Style dialog in AutoCAD:
@Anonymous wrote:
....
Do you recommend me to upgrade my Autocad to solve this?
I'd recommend you to upgrade AutoCAD anyway:
- latest AutoCAD version have new features, which are not available in 2017 version.
- latest AutoCAD version have less bugs
- and it will be compatible with future macOS releases (up to three years), while 2017 version will not be supported in next macOS version will be released in the fall of 2019