It massively varies! Anywhere from 110 to 160 is normal for boys and girls. It can increase up to 25 extra bpm when they're moving around too. Both my girls were 140-145ish, but my first sometimes got as high as 165 when she was kicking 🤭
My baby was 180bpm at 15 week appointment
My baby girls heart beat was 136 at her 16 week midwife appointment this week!