Thank you for your post.
In FileMaker Go, tap the bottom right icon (horizontal lines with a magnifying glass). Tap the last option "Enter Find Mode". Then, go to the Status field and enter "Open" and tap "Go". This will then find all record that have a Status set to "Open".
To show all records again, tap the same lower right icon and tap the first option "Show All Records".
Let me know if you need additional clarification.