Hello Duc Anh Nguyen,
Welcome to the MS Q&A Forum.
Based on the error message, you are hitting the quota limit for the SKU StandardBsv2 Family in SouthEastAsia Region:
You can submit a request for a standard vCPU quota increase per VM-family from My quotas in the Azure Portal.
Kindly review these steps how you can process the quota increase request.
Hope above answers your question and concern. Let me know if you need additional assistance. If the answer was helpful, please accept it and complete the quality survey so that others can find a solution.
Sincerely,
Olga Os.