Based on the post, I understand that you want to get an ID of a form.
1.Log in https://forms.office.com/ with your account.
2.Click and open the form.
3.Click the Collect response button and copy the long link. All characters after the 'id=' is the form ID.
For example:
The long URL is
ID is yZFLZEkYq0u2diA-EcBkaD2CdS_bbhVMigOusKlT_XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
In the flow:
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