I am interested in becoming a judicial scrivener as much as Mary is.
I would like to be a judicial scrivener as much as Mary does.
「メアリーと同じくらい」は「as much as Mary does. 」と表現できます。
司法書士は英語で「a judicial scrivener」なので
(1) I am interested in becoming a judicial scrivener as much as Mary is.
私はメアリーと同じくらい司書士になることに興味がある
(2) I would like to be a judicial scrivener as much as Mary does.
私はメアリーと同じくらい司法書士になりたい。