Here's an extended quote of his, found on Snopes fact check.
https://www.snopes.com/fact-check/surgeon-general-against-ma...
> One of the things [the general public] shouldn’t be doing is going out and buying masks … It has not been proven to be effective in preventing the spread of coronavirus amongst the general public … Folks who don’t know how to wear them properly tend to touch their faces a lot, and actually can increase the spread of coronavirus. You can increase your risk of getting it by wearing a mask if you are not a healthcare provider.
https://www.snopes.com/fact-check/surgeon-general-against-ma... > One of the things [the general public] shouldn’t be doing is going out and buying masks … It has not been proven to be effective in preventing the spread of coronavirus amongst the general public … Folks who don’t know how to wear them properly tend to touch their faces a lot, and actually can increase the spread of coronavirus. You can increase your risk of getting it by wearing a mask if you are not a healthcare provider.