You can fix that amount of run out with a bottle jack and a tire stand that is very solidly mounted to the concrete floor or on a large sheet of steel.
Clamp the rim tight
Find the low spot and block it up with the jack on the floor with any reasonable spacer
Push up in the low spots and the whole rim will bend bringing the high spot Down on the opposite side
Take many measurements
Make small adjustment until you have a feel for how far the rim springs back before it yields to permanent deformation/correction
Eventually you should be able to get it more than good enough for Driving on dirt and gravel roads under 50 mph.
If you tire stand is not securely mounted to the surface against which the bottle jack pushes up from then you will lift the tire stand off the floor
It takes tons of gentile controlled force to reshape the rim in this manner
Lag bolts in concrete will likely be pulled out
The tire stand need to be threaded to the rebar or L bolts in the floor when it was poured or the whole thing mounted to a sheet of steel like what I have.
