Drive to alignment shop. Have alignment done. Pay the man.
If alignment is too bad to drive it, call for a tow to the alignment shop.
That's probably not what you had in mind.
There are many ways to do a home alignment and I won't go too deeply into any of them.
To get the car driveable, you can set the camber by making some kind of fixture for your wheel that you can put a torpedo level or some kind of angle finder on, then add or remove shims to get the wheel to be vertical, which is 0 degrees camber.
Then you can set the toe in, best to make a fixture again, but you can get by with just a tape measure, set it to where the front measurement is 1/16" -1/8" less than the rear measurement.
Both of these need to be with the car on the ground with full weight on the tires.
The above will get you driveable enough to get you to the alignment shop. Don't worry about the caster for now.
If you do a bit of googling, you can find articles and equipment to do this at your home shop. But you'll have to spend some money or a little less money but some time to get the tools to do a reasonable job.
We can get into this further if there's interest.