Hi @Anonymous,
Do you mean that the choice field selection from Microsoft Forms cannot be saved to SharePoint Choice column?
I have made a test on my side. A choice field is added in the forms named as Question, and a Choice column is created in SharePoint list named as Status.
The flow is configured likes below. In the Status value field, click Enter custom value then fill in the dynamic content Question from the forms.

It works fine. Please take it for a reference and try it on your side.
Best regards,
Mabel Mao