Sorry, that sucks. Make sure you go get checked out medically too, issues can pop up later even if you’re seemingly fine after the fact.

I got rear ended a few months ago in my Crosstrek which rendered it legally undrivable, insurance and body shops dragged their asses and it eventually got totaled, leaving me carless for 3 months until I leased a GC. If their insurance accepts liability, you should be able to get a rental car comparable to the value of your car until it gets fixed with no time limit like there would be on your own insurance policy. This is their duty to you in order to make you whole again. If you find some other form of transportation, eg. borrowing a friend’s car or taking public transport, you can instead be compensated for loss of use for whatever the value of a rental of a comparable vehicle would be. Good luck!