i am login in my solid works now i can not understand what is subscription and where to get it.
Login is free.
Subscription you need to pay, yearly.
On top of what you paid for Solidworks.
Contact whoever sold you SW for subscription.
Do you have the commercial or student version of SOLIDWORKS? Student version does not have subscription. Commercial can be purchased with subscription. Subscription includes software updates and technical support from the company you bought it from.
Login is free.
Subscription you need to pay, yearly.
On top of what you paid for Solidworks.
Contact whoever sold you SW for subscription.