A portfolio and olympiad awards are a good move, but you need to understand the reality: you basically won't be able to completely skip the exam anywhere. Even creative universities require minimum scores in Russian and major subjects. But if you already have awards, that can help - some universities offer admission benefits or preferential selection for the creative exam rather than direct admission.
For design, architecture, fine arts, you should look at universities like MARHI, VKHUTEIN, St. Petersburg Academy of Arts - they conduct their own creative exams, but they still require the exam. The same goes for music and theater universities. A portfolio there matters as supplementary material for the commission, especially if it contains serious work.
Check the specific websites of the universities you're interested in for 2026 - they usually spell out what benefits you get for olympiad results and how exactly the portfolio affects selection. Sometimes there's a way to meet the minimum required score and move on to the creative exam as the main criterion.