Try
www.olivegarden.com and see if they have it. If it isn't there you are going to have to do your best guess estimate for the points.
I assume you are talking about this:
Stuffed Shells with Shrimp
- Available for a limited time only. -
Pasta shells filled with four Italian cheeses and spinach served over seafood marinara, topped with sautéed shrimp in a creamy seafood sauce.
In general I would say probably 8 for the shells and marinara sauce.
Shrimp probably 4 points.
The creamy seafood sauce is probably 10 points.
I did this based on looking at some recipes for these items.