What effect does mother type O+ and father type A+ have on baby? Affect baby having jaundice?

No. The O incompatibility is when the mother reacts to the antigen on the baby.
Immune hydrops fetalis is most often a complication of a severe form of Rh incompatibility, which can be prevented. This is a condition in which mother who has Rh negative blood type makes antibodies to her baby's Rh positive blood cells, and the antibodies cross the placenta.