It is not possible to use a Repeating Data structure or repeated measures in surveys.
Please consider the following alternatives for Repeating Data/repeated measures in surveys:
Using grid fields
Create a grid field to collect measurements. You could add a radio button and an additional grid field in case more measurements are required.
Make the additional grid field dependent on the radio button field.
Using field dependencies
It is possible to create several fields and make them dependent.
For example, in the survey below, the first question is 'How many pregnancies did you have?'.
Depending on the number of pregnancies, the respective number of questions will appear.
Please note that the dependent fields should be located on the same page as the question on which they are dependent.
If the dependent fields are located in a different step without any other fields, the step will be shown as blank. If you opt for this option, you could add a remark field to instruct the respondents to proceed to the next page.