While it is technically repairable (anything is with enough dedication and effort), I cannot find parts available. I also cannot find any guides, be them written, photo, or video. So it would be uncharted territory.[br]
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You would likely have to buy one that is listed as not working for parts but the screen is in-tact, figure out how to take it apart, and harvest the screen to replace onto your device with the working internals but broken screen.[br]
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It is definitely doable, in theory, but the amount of time and money you would need to spend may make it not worth it. My search online found many instances of complaints about Gabb's durability and their attitude towards repairing devices for customers shows they very likely have a very low opinion of repair culture like we promote here.[br]
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If you do decide to take the challenge, please take notes and photos, and consider making a guide ([guide|129922]) so that anyone else in the same situation next time will have your brilliance to show them the way!