I don't know how to download solidworks
You will need to register a serial number that is on an active subscription to be able to access the 'Downloads and Updates' option
go to solidworks.com in a browser
click on support
hit the button "log into My Customer Portal"
In the customer portal there is a "download and updates" button under downloads (What David Lane posted above), hit that, select your version and download.
Have you purchased Solidworks from a Value Added Reseller?
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