Deciphering old genealogy documents can be frustrating, fun, and depending on what you find, full of surprises! Sometimes, the problem in decoding the handwriting is that the image itself is faded or blurry, and changing the exposure of the image may help. I often put hard-to-read documents into my favorite editing software, GIMP, then decrease the exposure, and zoom in to view the document at a larger size. Or, if the document is on my iPhone, I can take a screenshot of it, lower the exposure in my iPhone's built-in photo editor, and zoom in to get a close-up view.
If you cannot decipher the document yourself, try posting it to a website or forum dedicated to decoding handwriting. Two public online forums where you can upload hard-to-read handwriting are Reddit.com/r/Genealogy and Reddit.com/r/Cursive. You can also seek help through the private Facebook group called "Deciphering Genealogy Script."