ENGAGE is tokens, you can check how many you have (if any) in the hive engine wallet found in the wallet tab of peakd.

I hold more than 1001 ENGAGE tokens so can trigger a Hive account@misterengagement vote with the invocation of the !ENGAGE (1-100) thing. It rewards engagement. If you go to the reply you made, the one I initially commented on you'll see a 0.03 vote and 12 voters. That's what invoking that 20 thing did. The number is a percentage.