You can read more about how Activity scores work here
Once set, activity scores apply from that point onwards in your platform, so for example, if you change these settings in a few months time, they will not retroactively update any ideas that were scored against your older values.
In order to update the number of points a Follow, View, Like (coming soon) or Comment is worth, head to Settings in the left-hand menu:
Then choose "Activity score".
Click "Edit attributed points" and set the values as you want them.
We'd recommend that views are given a relatively low score, e.g. 1 or 2 points, whereas interactivity such as a Comment or a Follow to be a bit higher than this.
Further reading
Updating your Activity score threshold