The entire question doesn't have any sense. I'm going to divide
it. The part of
"Usted si es bilingüe" means If you are bilingual.
The next part: "El haber trabajado en el Valle del Rio Grande le
ayudo mucho" means: "Having work at the Rio Grande Valley help you
a lot" or it can be "Working at the Rio Grande Valley help you
quite a lot".
The last one is "Muy bien" it just mean: Great
Maybe the real sentence was: "El haber trabajado en el Valle del
Rio Grande le ayudo mucho". The part of "Muy bien" is a redundant
and it can be a confusing for translating purposes.
I'm not an expert but I did try my best. Hope this answer will
help.