How to get a past refundFrom turbo tax?

Are you referring to a CRA refund following TurboTax filing of your return, just to be clear? 

Did you get a Netfile confirmation from CRA after filing your return? If not, please make sure your return has been filed and transmitted to CRA.

The CRA's goal is to send you a notice of assessment, as well as any refund, within two weeks, when you file online. eight weeks, when you file a paper. You can get the funds deposited in your account if you have a direct deposit set up with CRA; otherwise, a check will be mailed out. 

For more information, please refer to the CRA link.

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