It can take a while, as the request needs to be reviewed, approved and then deployed. As yesterday was a holiday in the U.S., you might have to wait until Friday (see quoted text below). Also keep in mind that this is not an automated process, a real person will have to review your submission. You will not receive any notification, unless the team decides to contact you directly.
We usually review access requests every Wednesday and deploy approvals every Friday or Monday, except during major holiday weeks in the U.S. Submissions during those weeks are processed the following non-holiday week.
To verify whether your request has been approved, test your application access on the next applicable Monday. If we have additional questions about the request, we will contact the email specified in the form.