Hi,
Your databases, by default, are in the wamp(64)/bin/mysql/mysqlx.y.z/data/ folder.
Since the folder was deleted by the uninstall* and then you rewrite to disk, I'm afraid it's unrecoverable.
* The warning message is very clear:
WARNING: The Wampserver installation folder will be completely deleted: the local sites and databases located in this folder will be destroyed if you have not previously backed them up.
Do you really want to uninstall Wampserver?
---------------------------------------------------------------
Documentation Apache -
Documentation PHP -
Documentation MySQL -
Wampserver install files & addons