I recently posted about an inverse H&S on ES as the right shoulder was forming and it ended up playing out even though I was skeptical at the time. We can measure the projected target by taking the distance from the bottom of the head to the neck line and measuring that from the breakout point. That target was around 5700 which has been hit (note the contract rollover.) On top of that target we have the previous double top/ATH and trendline resistance.
The trendline is the top end of a triangle shown here with the gray lines. Once again we have multiple resistance and confluence for a rejection. However, this also means that if it breaks to the upside it will have that much more momentum and lead to more short squeezes. If the triangle breaks to the upside, first target is naturally going to be ATH. I'd be careful of a rejection there and look for the triangle to hold on a retest for more longs. If the retest doesn't hold, I'd interpret that as bearish and start looking for shorts.
It's a big week so I expect this to lead to a break up or down soon. We're at the very top end so first downside target is the bottom end of the triangle and then the neck line.