A simple solution would be using a language pack for SketchUp (if it exists) same as the text, type out the text in 3D, then edit text to match design. SketchUp doesn’t not have this language option - don’t see any relevant extensions either.
What language is it (Arabic)?
What SketchUp version are you using?
Other options include SketchUp extensions such as Thom Thom Bitmap to mesh (would require a lot of photo editing first).
Choices depend on skill level too.
If it is a common saying, you could try to find it already modelled on the 3D Warehouse (including the decorative corners)?