my wife is a care giver. shes working for 2years already,can she now pitition us?

Question

and how long it will take to be granted her sponsorship?

Answer 1

She should check with an immigration attorney. We don't know her circumstances.

Answer 2

Working in the US for 2 years does not give anyone the opportunity to file for status. You need to be sponsored by immediate relative or the company she works for needs to apply for H1b visa. Which, by the way, the US only issues 60k a year.
Hire an attorney or go back to your country and try the visa lottery from there.