There's a thriving community of sewing machine enthusiasts online, all of whom can help out with missing manuals. You may not have to look far; the image of the Brother VX-950 below was sourced from Google Images, which also has pictures of the VX-950 manual, so perhaps you can piece together your own copy from Google Images.
That aside, there are sites which deal with both manuals for electronic appliances, and sites for sewing machine users. Both can be of help.
The sites dealing with just manuals include manualslib.com, manualsowl.com and homeappliance.manualsonline.com. The latter is an online forum, whereas the first two are manual libraries, both offering free downloads of the Brother VX-950.
As for the sewing communities, try sewusa.com or sewingpatternreview.com, where you can post a question asking fellow Brother users for help in missing manuals, or advice on repairs and spare parts. Remember the VX-950 manual shared with the VX-940 manual, so ask for that if you're getting nowhere with the 950.
The website for Brother has a online support center page where you can check if they have a manual for your machine available, by entering the type of model. Go here to take a look.