My dad US Citizen passed away 2019. My Mom's green card expired 2016.Now filed for Mom I-130 in January and can i file for visitor visa concurrently?

Your mother can file for a nonimmigrant visa during the time that you have filed an immigrant visa petition on her behalf. The decision of whether to approve the nonimmigrant visa will be up to the American consular officer in a determination of whether he or she is convinced that your mother will return to the home country after the brief period of visit. She must put down on the DS-160 application form that you are in the United States and that she has had an immigrant visa petition filed on her behalf. Due to the limitations of the Lawyers.com Forums, Alan Lee & Arthur Lee, Esqs.’ (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.