。
Has she ever been in love?
Literal
She [topic-は] love [object-を] did experience-exists [question-か]?
A textbook example of the experiential ~たことがある pattern in question form: 'Have you ever done X?' The polite ありますか makes it appropriate for asking a somewhat personal question without being too blunt. 恋をする is the standard way to say 'to fall in love / be in love.'