Logi products come with a built-in 15-day trial license. You don't need to do anything but install the product and you can begin using it immediately. For Logi Info, aclearly-visible display, shown below, in the Studio main menu counts down the days remaining in the trial period.
After the Logi Info 15-day trial license period expires, unless you have a regular license file in place Studio will no longer start up and any Logi reports you've developed will no longer run. An expired trial license will cause other Logi products to block access to certain features and/or prevent you from saving your work.