Does "Apply for scholarships, get accepted and then refuse" help in your CV?
Do not do this.

Programs in the US generally do not care if you've been offered admission to programs in other countries. You are judged on your aptitude for research and to make future contributions in your field. If you cannot convince an admissions committee this between your record, your statement of purpose and personal statements, and your letters of recommendation, then how will you get an offer in Europe—when generally the same materials are needed to get you through the process?