Maybe you should try an AI tool and get the paid version if you have so many images:
Try Auto-Remove Scratches https://neural.love/old-photo-restore
https://vanceai.com/old-photo-restoration/
this post was submitted on 29 Nov 2023
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A place to politely discuss the tools, technique and culture of photography.
This is not a good place to simply share cool photos/videos or promote your own work and projects, but rather a place to discuss photography as an art and post things that would be of interest to other photographers.
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If the dust is in the same spot on all of the pictures you can create a heal mask in Lightroom, and apply it to all images.
What's your budget?