You can fill out PDF forms in Google Drive on your Android device. On your Android device, open the Google Drive app. Tap the PDF you want to fill out. At the bottom, tap Fill out form Enter your information in the PDF form. At the top right, tap Save.
You can also download PDF forms to your computer from Google Drive. On your computer, open the Google Drive app. On the left, tap File. Tap Select. To Save, tap Save As. To Submit, tap Save.