Yes. Your profile is competitive for SSE MSc Business & Management with a GMAT ~645–655 (minimum is 555 Focus / 600 old GMAT) and your 3.84/4 GPA. MBM needs over 30 ECTS in Business Administration—your BSc should cover this.
For SSE MSc Economics, the bar is similar on tests (555 Focus / 600 old GMAT or GRE Quant over 155), but you must have over 30 ECTS specifically in Economics-check your transcript; if you’re short, MBM is the safer fit.
SSE doesn’t use a fixed “target school” list; they assess your university, courses, grades, test score, English, CV, and motivation holistically. Work experience isn’t required, so two summer roles are fine. Aim to meet the English requirement (e.g., IELTS 7 / TOEFL 100) or claim the exemption if applicable.
Bottom line: Good chance for MBM with a 655ish GMAT; Economics is feasible if you meet the Econ-ECTS. Apply early and present clear motivation.