<Form id="hubspotForm" availables={["Spain", "Andorra", "Belgium"]}></Form>

const Form = styled.div<{ availables: string[] }>`
  option {
    display: none;
  }

  ${({ availables }) =>
    availables.map(
      element => css`
        option[value="${element}"] {
          display: initial;
        }
      `
    )};
`;