Could I file I-130 form to sponsor my parents to US while I'm still living outside the country?

Generally, a U.S. citizen age 21 or older may sponsor parents to become Lawful Permanent Residents (to get "Green Card"), and this is true even if the U.S. citizen child may be outside the U.S. In order to analyze the most appropriate steps to take, however, more information is needed. It would be wise for you and your parents to consult with an immigration attorney who, after learning all of the relevant information, could advise about eligibilities, options and strategies to attain your goals, and who then could offer legal representation in the often complex application process.