It would be fabulous to have an abstract template for academic writings.
I’m an academic, and I have no idea what you mean by “abstract template”. Having said that, it is very easy to make your own templates if you need one.
Martin.
jax
Do a search for abstract templates, in the little search bar at the top of the forum page. 
That should get you going 
Welcome aboard Scrivener.
Happy Scrivening
Vic
PS check out Preparation in section 8.4 of the User Manual.