Contradiction with Exodus 2:2
This verse states that Moses was a "goodly" child, without mentioning any favor from God as noted in Acts 7:20.
Exodus 2:2: And the woman conceived, and bare a son: and when she saw him that he [was a] goodly [child], she hid him three months.
Contradiction with Hebrews 11:23
This verse highlights the faith of Moses' parents in hiding him, but does not mention him being "exceeding fair" to God as in Acts 7:20.
Hebrews 11:23: By faith Moses, when he was born, was hid three months of his parents, because they saw [he was] a proper child; and they were not afraid of the king's commandment.