Look for the executable file (usually named BlueStacks.exe or UltraEgo.exe ) within the extracted folder; there is often no traditional installer.
Search for the file on Google Drive using the search term "BS Ultra Ego Version Final Beta 1x.rar." You might need to navigate through shared folders or use specific search filters. BS Ultra Ego Version Final Beta 1x.rar - Google Drive
Indicates this is a late-stage testing version before a stable release. Look for the executable file (usually named BlueStacks