Hi,
Here’s are some images taken from the [https://www.manualslib.com/manual/656867/Visual-Land-Prestige-7.html#manual|User manual] for your tablet that explain what type of SD card (micro SD or micro SDHC up to 32GB) can be installed and how and where to install it.
[image|1646318]
[image|1646319]
[image|1646320]
(click on images to enlarge for better viewing)
Hopefully this is of some help.