After being in an accident, the ABS light turned on, the alignment is off and the back wheel and bumper bent slightly upwards

Hello,

Any time a vehicle has been in an accident, there could be a number of components that can get damaged/bent.

The ABS light can come on due to a bad sensor or a broken wire due to the impact etc.
A good step would be to scan and retrieve the ABS code(s), that can help with the diagnostics.

Here is a helpful video:

https://youtu.be/rTtAnsOlZU4

As for the alignment, it can be off for a number of reason as well. It could be due to any number of bent or damaged components.
The best option would be to try to get the vehicle aligned, that can tell you if there are major components that are bent or something that can be adjusted. It will all depend on the severity of the impact.

Let me know of any questions.

Thank you.