Hi etchen,
You can use the following the component which displays statistics about the user's activity in the community, but this will work only on the User profile page.
<@component id="users.widget.my-statistics"/>
But, to display this on Forum Message Page, you can customize it by using the rest v2 call:
<#assign getMetrics = rest("2.0", "search?q=" + "SELECT id,value FROM metrics WHERE id IN('net_overall_posts','net_kudos_weight_received','net_accepted_solutions') and user.id='${user.id}'"?url).data.items/>
<#list getMetrics as userMetrics>
<span>${userMetrics.value}</span>
</#list>
Let me know if this helps.
Thanks,
Payal Uppal