I have good news for you: the best schools of economics in France teach in English and select their students (most of them international) by a standard application process and not by competitive exams. They are:
1) Paris School of Economics -- formed by the School for Advanced Studies in the Social Sciences (EHESS), the École Normale Supérieure (ENS), École Polytechnique (X), Ponts ParisTech, and the University of Paris 1: Panthéon-Sorbonne.
2) Toulouse School of Economics -- a school of the University of Toulouse 1
The bad news is that the Paris School of Economics only select at the postgraduate level, the Toulouse school however has a bachelor's program. For a bachelor's you can try as well Sciences Po, but I wouldn't recommend it for a postgraduate course in economics.