Hello guys, where I can find the node version that I need to use for the devtools version 2020.2.1? Thanks

What matters is the version of SCA..

12.14.x -- see https://developers.suitecommerce.com/suitecommerce-advanced-feature-compatibility-matrix.html

Thank you @Steve Goldberg I also found this info:

Cool, and I told you the wrong version 🤣

Hahahah no worries, I was able to make it work with the version 12.16.3