You can simply right-click the file and select Extract All... to unzip it without extra software.
Select to unpack files in the current folder or Extract to "t (7)" to put them in a new folder. Security Considerations Before opening the contents, consider the following: t (7).zip
The "(7)" suffix suggests this is a duplicate download or one in a series of similar files. You can simply right-click the file and select Extract All
Only extract files from trusted sources. Malicious zip files can be used to deliver malware. t (7).zip
If the file is encrypted, you will need the specific password provided by the creator to view the contents.