According to Desktop Team Updates - Monday 23rd March 2020
there was a recent PR of Snap Store translations from Launchpad.
I had a look at https://launchpad.net/snapstore and each of the subprojects, and could not find the messages being translated on Launchpad.
That is, the Translations tab is empty, as in https://translations.launchpad.net/snapstore
Therefore, which is the Launchpad URL for the translation of Snap Store?