I also want to put exiftool on my Wordpress Website but I am not finding any way,
Also the implementation Guide shared by @Phil Harvey is down now.
Please help me
Have you checked to see if it's already available on the web server? A lot of web hosts already include exiftool, as well as other useful programs such as ImageMagick. Connect to your host via something like PuTTY (if on Windows) and type exiftool -ver to see if it's available.
Or contact you hosting service to see if it's available.
You do have to make sure Perl is available, but it should be. Otherwise, you should be able to upload the main archive to you web host and call it directly. See the top of the Install instruction (https://exiftool.org/install.html). For a more complete install, see Installing on Unix (https://exiftool.org/install.html#Unix).
The website Phil linked didn't include instructions, it was just an example site that used exiftool. There are a bunch of these sites that use exiftool in this way. For example, https://exifdata.com/ uses exiftool on the back end, though they don't say that is what they're doing. But it's obvious by the inclusion of "Composite" in their detailed listing.