Hello Hien Nghiem Xuan & lex Canton Greetings!+
I understand that you have applied for access and been added to the waitlist.
As Dillon Silzer called out due to the ongoing demand, application approval process might get delayed.
As mentioned in the form, application process involves lot of checks.

Unfortunately we will not be able to check the status of the application individually.
You need to wait for the final confirmation from team and then only you will be able to access and can deploy models. Kindly wait for the confirmation email from the team.
Also, Please add maccount@microsoft.com and csgate@microsoft.com to your Safe Senders list to ensure you receive all correspondence pertaining to your registration, including a verification email from Microsoft Vetting Service.
For questions about the registration process/updates, please contact our team at csgate@microsoft.com.
Hope this helps. Do let us know if you need any further help.