How can I link an answer to a question to another section of jotform?

That's possible.

If you want to pass form value to another form, here's a guide: https://www.jotform.com/help/351-How-to-Automatically-Pass-Form-Data-to-Another-Form

However, if you want to pass form value from one field to another field in the same form, here's how: https://www.jotform.com/help/286-How-to-Pass-Field-Value-to-Another-Field

If you have further questions, let us know.