Click on "Product Catalog"
This should be present on the navigation menu, locate at the left of your screen.
Click on "Create Product"
This is located at the top-right of the stripe
Enter your product details
Ensure you are setting up a "Reoccurring" product, Once satisfied click the "Add product" button.
Copy the price ID
This ID is generated alongside the product you just created. Located on the price table while present on the product page, click the price that was just created (The price table item)
It should take you to the price page where you'd be able to copy the ID similar to how you copied the Webhook ID previously, at the top-right of your screen.
Enabled Subscriptions on the stripe field/question
Locate the stripe field/question on the form you'd like to activate subscriptions on. Proceed to click "edit" and toggle the "Configuration" accordion.
After, toggle the "Subscriptions" toggle and you should see a field to enter your recently copied price id. Enter your ID and click save.