I have a 200 amp main panel and want to run power to the 200 amp sub panel, I am looking at using this breaker, Siemens 200-Amp Siemens Main Qpp Breaker
Model # Q2200B Internet # 100144183 Store SKU # 196327
Store SO SKU # 516939 on home depot website and turn it sideways to get the power to the sub panel will it work? Or Lowe's has this one Item #: 140290

I don't know of a 200A main breaker panel that can have a 200A branch circuit breaker.

Look on the label and see if it say anything about a maximum branch circuit breaker.

Agree with Stan, the maximum branch circuit breaker is 100 amp or 125 amp at largest.
Are both panels Siemens? You cannot install a breaker from a different manufacturer in any panel...
Why would you do this?

What would be the reason you are trying to add a 200amp sub panel from your 200amp main panel?