If you would like to receive Notifications when a New Topic is created in the Forum, you will need to do two things:
1) ensure you are following the forum. You will select the bell and it should show a check mark as seen below. If you do not see a check mark, you are not "Following" the forum
2) In your Profile > My Settings > Follow and Notifications, whatever you choose for options will now be respected. If you select "Immediately", you will get a notification for every new topic posted to this forum. Daily and Weekly Digest allow for options if you would prefer to only get a daily or weekly email showing all new topics. But this setting will only work if the bell in step 1 is selected.
Shoutouts to