Applying the same settings to all photos in Adobe Lightroom is a great way to quickly edit multiple photos. To apply the same settings to all photos in Lightroom, you need to use the Sync Settings feature. To access this feature, select the photos which you want to apply the same settings to in the Library module. Then, click on the three-dot menu on the top right corner and you will find the Sync Settings option.
A dialog window will pop up and you will see a list of settings that you can sync. Select the settings that you want to apply and click the Synchronize button. Lightroom will then apply the same settings to all of the photos that were selected. You may need to apply some final touches to some of the photos, but you will have saved a lot of time by syncing the settings.