pass a URL to another component

[plush trench]

Not sure exactly what you're trying to achieve, but you can redirect:
https://docs.astro.build/en/guides/routing/#dynamic-redirects

[clear nacelle]

I want to get the submitted URL to another page.

[plush trench]

You can setup an endpoint that your form submits to and then redirect.
https://docs.astro.build/en/guides/endpoints/#redirects

[neon gazelle]

You have Astro.url available as well.