Vaccinations are a choice.
If you weren't immigrating to the US, you'd choose whether or not to be vaccinated. Other organizations like school or employment in some countries require vaccines too.
My issue is not understanding what you aren't understanding because when I ask a direct question I get no response to be able to help you.
If you are asking about school vaccines, I can move this post over to a forum where you can get answers about everyday life in the US as an immigrant.
I am answering from the K1 AOS IMMIGRATION perspective as that's where you've posted this.
I485 instructions state when anyone applying for a AOS would have to submit their medical documents. It also explains the K1 exception to having to do that.
Other AOSer who are not K1s OR who ARE K1s who have not completed their vaccinations (which still could be you but you haven't answered clearly) are required to complete a medical in the US by a civil surgeon and to submit an I693.
WHEN that is to be done is clarified in the I693 instructions.
That MAY BE YOU so after you've examined your DS3025 for completeness and read through the policy manual on how DS3025s are evaluated to ensure yours IS or ISN'T complete, AND determined IF you need an I693 or not, it would be wise to read through the I693 instructions too to know WHEN to complete and WHEN and HOW to submit.
As we can't see your records, you're going to have to do the researching.