What happens if you contract Covid while traveling in Portugal?

Hi,
We are planning a month long trip to Portugal (from the US) in late October into November. My Wife and I are both vaccinated and yet still quite cautious. . I’ve been reading various helpful threads about what’s required regarding people from the US traveling there, such as a negative test to check in to a hotel or even restaurant. If one is unlucky enough to contract Covid while traveling there, where would you go or be allowed to go in order to quarantine and recuperate? Just wondering what the worst case scenario might be? Thanks for any input!