"Included in the seven noahide laws, which is biblically binding on all humanity, is a prohibition against murder.[2] Included in the Biblical prohibition of murder, is a prohibition against abortion of a fetus. Thus, according to Biblical law, a Gentile who aborts a fetus transgresses the prohibition against murder and is liable for capital punishment, as applies regarding each of the seven noahide laws.[3] The prohibition applies to both male and female gentiles.[4]"
"Civil law: Even if civil law permits abortion, the Biblical prohibition against abortion remains in place.[8] Furthermore, according to Biblical Noahide law, all nations must establish court systems which enforce and prosecute transgressions of any of the seven Noahide laws, including abortion.[9]"
Source https://shulchanaruchharav.com/halacha/pro-life-or-pro-choice-the-torahs-perspective-on-abortions-of-gentile-fetuses/ "RAV MOSHE FEINSTEIN zt'l (Igros Moshe CM 2:69) concludes that if desecrating Shabbos in order to save an embryo less than forty days old is permitted, then aborting such an embryo must be forbidden. The fact that one may desecrate Shabbos to save the embryo indicates that it is considered a person, and thus killing it is forbidden."
Source https://www.dafyomi.co.il/nidah/insites/ni-dt-030.htm