Like earclacks? If so:
Add a new text blueprint. Name it something like "Health display". Edit the text to say $value.
On your Enemy's logic tab add:
A variable called $hp
When created
→Create [text blueprint] ...
On the text's logic tab add:
A variable called value
When created
→Repeat every 0.0167 seconds
→if actor exists: Creator
→Set variable $value to Creator: $hp
Set layout property X to Creator: X position
Set layout property Y to Creator: Y position
Else
→ Destroy this actor