If you need specifically the 2020 version for compatibility with older workflows:
If you are looking for a free full version in Spanish, that would be software piracy, which is illegal and unsupported. Adobe Illustrator is commercial software. For academic papers, you can cite trial versions, educational licenses, or official documentation. adobe illustrator 2020 full espa%C3%B1ol 19.0
Adobe persigue activamente la piratería. Las multas pueden ser elevadas, especialmente para uso comercial. If you need specifically the 2020 version for
Adobe offers a 7-day free trial of the full, uncrippled Illustrator 2020 (or latest version). No credit card required for the trial in some regions. Adobe persigue activamente la piratería
No. Las versiones "portables" son modificaciones ilegales que suelen contener malware y carecen de muchas funciones (como fuentes en la nube o exportación avanzada).