If you don't have a task when playing the Fat Goose Gym, you can try the following steps:

1. Make sure you download the correct version of the game and log in to your account.

2. Click the task option in the main interface of the game to see if there are any tasks to collect.

3. If there are no tasks available at present, you can try to refresh the task page or wait for the task update.

4. If there is still no task to get, you can try to contact the game customer service for help and solutions.

The above is the solution when there is no task in the Fat Goose Gym. I hope it helps you.