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Get to know Bridge. LR is not a magical app that fixes all images at once. Never has been, never will be...
The best way is to correct one image in ACR - that you think is similar to several/many others - make changes that you want to apply to all (WB, sharpening, etc.) and then hit "Done".
Select the other *similar* images, R-click, and under Develop Settings, click "previous conversion". N.b. this gets you close but you may still have to make changes for individual images - just like you would in LR...