This the most difficult lighting situation imaginable - shot directly into strong sunlight. What you should have had, is a flash unit on the camera. But of course it's unrealistic to walk around with that the whole time.
This is using the full dynamic range of the camera sensor, probably 12-14 full stops, and you will need the full raw data to do anything about this.
I'm not sure I would recommend even trying. It will very quickly look artificial. But if it's an important image and you feel you have to at least try:
First get rid of the strong blue cast from the sky, and then raise the overall exposure to whatever you want. Do this in ACR to get all the data (I just did it with Curves here). It will still inevitably blow out the highlights. Here's a trick to retrieve them: Duplicate the original version, and compress it towards the highlights by dragging the output black slider far to the right. Put this layer on top in Darken blend mode:

Tighten up final contrast with a Curves layer on top.
EDIT: I overdid it here. I'd pull back 50% if it was me. But it shows the principle.