-Normally it takes about 3 months to get the AP approved.
2)我父母的簽證在遞交文件後還有一個月到期,請問8老師這種情況我需要給他們申請B簽證延期嗎?
-Not need. After they submit their I-485, they are legal to stay even if their B2 status expires. Also, their B2 extension will not be approved due to immigrant intent.