How screwed am I?

Water was coming in through some bad flashing in this Philly Rowhome for years before I noticed. Fixed the roof. I noticed this plaster behind the Sheetrock was dissolving and bulging out the wall at the bottom so I ripped it out to get a look at it. My original plan was to snap mortar in there until I noticed this crack. I looked outside and it’s on the exterior as well. The exterior wall is parged with a thin layer of mortar but it’s an easement wall on a row home so I never had a good view of this exterior wall. Now I’m noticing cracks. Please help I’m freaking out. Is this a call to the homeowners insurance?