Neither COVID vaccination nor the applicant’s health conditions are criteria that might make someone ineligible for applying to a Portuguese residency via investment. There is no mandatory requirement for a residence permit applicant to be vaccinated, as these subjects are not connected. The only situation where the vaccination is relevant, regarding your question, is for traveling matters. Regarding your intentions, unfortunately, Portugal does not provide any kind of direct permanent residence or citizenship by investment program. Instead, it offers a residence program for investment purposes (Golden Visa). In order for you to apply for a Portuguese citizenship or permanent residency, first you will have to apply for a temporary residence permit under the Golden Visa program for a period of five years. Once you fulfill the five-year period, you will be entitled to apply for either a permanent residence or the Portuguese citizenship.
