Hi, Yexel_Sauquillo !!
Regarding this issue, the current official announcement from Wix seems to be that the only solution is to rebuild everything manually from scratch. However, I think I’ve come across a post mentioning an unofficial tool that can transfer designs, but it’s likely not an official solution. At this point, it’s important to understand that the Wix Editor and Wix Studio Editor are entirely different platforms. 
I’m currently in the process of migrating a site I’ve worked on for years over to Wix Studio, and it’s a challenging task. That said, during the process of rebuilding, I’ve discovered many new features and opportunities to refine the design, so it doesn’t feel like a 100% waste of time. The real issue, I think, is figuring out how to handle legacy data created in Wix Apps on the old site. 
P.S.
I found the post I had seen before. Loeiks shared a method using Figma. He’s a highly trustworthy community member, but to be honest, I feel that even with this method, it might be difficult to fully leverage Wix Studio’s responsive capabilities when copying a design. If that’s the case, it might defeat the purpose of rebuilding the site in Wix Studio in the first place. 
That said, it’s worth trying at least once. If it works well, that would be amazing. Please let me know how it goes if you decide to try it!