Yes. You can create the backup file on iCloud (Recommended). For other methods, follow the below steps to take.
Tap Share button (right below) > Select All > Share action (top right) > Save to Files.
To open the .wib file in "Wines", tap or Long-press the .wib file > Tap Share button > Tap "Wines" Icon > Tap Save button (above right).
Or, to create a .dat file congaing all wines:
In the "Wines" app tap settings > Back up all wine Data > Create Back up file.