This website is by Reddit user ‘AlwaysTryAnotherName’ and it’s been up for about 3 days. Unfortunately, there aren’t many saves on there, but there are quite a few that you could check out.

How do I upload my game saves and apply downloaded ones?

First of all, you need to download Vita Save Manager and install it on your PSVita. Remember, all game saves must be decrypted to be usable by others!

To upload games:

Dump your game saves through Vita Save Manager
Open VitaShell and start a USB/FTP connection with your computer/mobile device
Go to ux0:/data/savegames
Copy the folder of the game ID you wish to upload your save data for to your computer/mobile device

http://wololo.net/2018/02/24/psvita-...-never-easier/

http://wololo.net/2016/10/24/release...-updated-v0-8/

https://github.com/d3m3vilurr/vita-s...ases/tag/0.8.0