Apple Photos has already OCR'd all photos when creating its search index. Strictly not full OCR, but it has scanned for words in each photo.

Do a few searches in Photos for common words (like 'and' and 'the') and open the *Text Found in Photos* section.

You could then create an album called, say, "Text" and drag the photos from each search into it.  That should collect nearly all the photos with text.