Unfortunately, ResearchGate does not have an export function for publications. Many years ago, there was such a function, and it was possible to export a CV with a list of publication. However, it it never worked well - the bibliographic data in the output was very incomplete. At the end of 2016 or in 2017 this function was was removed.
As far as I know only ORCID https://orcid.org has such a feature that comes close to the goal of providing a list of your publications for CV purposes.
If you have an ORCID profile you can click on the 'printer' logo.