If you want to unlock 7z file password but many third party tool available online so i suggest you SysInspire 7z password recovery software which is without changing in the internal data of the file and recover minimum and maximum combination password. The GUI is east-to-use and offers you the trial version to unlock the first three characters.
More info:- Unlock 7z file password
All 7zip file passwords can be recovered with the help of PassFixer 7z Password recovery software. This software recaptures the password in just a few minutes. It selects your file in which you want to recover and choose any attack from the three options (Brute Force attack, mask attack, and Dictionary attack) after running it according to the instruction then you will get your password easily.
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