I am not sure which resource that is, it looks like the bank/atm resource in ESX. In any case, the locale or language is set in the configuration file. Many times that is config.lua or something similar. You should be able to find something there to change the language. Often, some of the resources have an html folder with alternative UI files. You’ll see something called ui.html or index.html. There may also be extra files like en.html or fr.html or es.html. In that case rename your language to replace the ui.html and then restart that resource in the F8 console with refresh and restart <name of resource>

Hope this gives you a clue. I wish I knew exactly what resource that was. It looks like a banking one, probably whatever is default with ESX.