Hi @michelegarcia,
A form cannot be redirected immediately based on a field updated in a form submission. This is because it takes time for the information to be sent to HubSpot, propogate on the contact record, and then inform which page the contact sees. All of this takes longer than the url redirecting from the form to the next page.
With that said, if you can create a buffer page that a contact visits before arriving at the next page, that is one workaround.
If you can share a little bit more about your end goal, the Community can assist.
cc: @KatieSchieder, @ndwilliams3, @HelenRoss.