Use a standard utility like WinRAR or 7-Zip. If the file asks for a password, it should have been provided at the source of your download.
While "BASE V2 Exclusiva" is not a single globally standardized product, the name often refers to a specific version of a digital foundation, such as: BASE V2 Exclusiva.rar
A "base" in gaming communities (like Rust, Roblox, or FiveM) often refers to a pre-built structure, layout, or source code intended to be a starting point for further customization. Use a standard utility like WinRAR or 7-Zip