Hi @Kate Shutova ,
Hope you are doing well.
Microsoft Internal team 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.
Documentation reference- https://learn.microsoft.com/en-us/graph/teams-protected-apis#request-access-to-protected-apis
We suggest you to wait for a day or more. However if it takes more time, you can always raise a support case to check the status of your request.
For raising support ticket- http://aad.portal.azure.com/ or https://admin.microsoft.com/#/support/requests
Hope this helps.
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