I would suggest the best thing you can do for now is to gather ANY medical/vaccination records as you can if that information is available to you. I know some areas of the Philippines that medical recordkeeping is not the best, but maybe you will get lucky. The remote area my wife grew up in had no records available. My wife had to get a couple of vaccinations on her medical at St. Lukes that she had no evidence of, however she had the vaccine scar on her arm from childhood vaccinations and they let her slide on those. She had paperwork for her 2 doses of the covid vaccine (Sinovac) so that was a non-issue.
By the way, don't just collect any medical records available, try to gather school/employment records or anything else you can think of while still in the Philippines. You never know what you might need once you are in the US.