"The French competition is significant."
Translation:La concurrence française est importante.
See an explanation here:
To make it clearer:
concours = contest/competition = an organized event in which people try to win a prize by being the best, fastest, etc. Ex: Elle a participé à un concours de mots croisés = She's entered a crossword competition
compétition = competition = a situation in which someone is trying to win something or be more successful than someone else. Ex: Il y a beaucoup de concurrence entre les sociétés informatiques = There's a lot of competition between computer companies
Also, "concours" is masculine, so it is "le concours".