I had capital loses in 2017 from stock sales, however in my Review screen I can't see where those amounts are incorporated. Does anyone know where I can find that info?

Capital losses do not show on the tax return. They would only show on line 254 if they were offsetting a capital gain being claimed on line 127.  Otherwise, Capital losses are carried forward indefinitely to offset future capital gains or carried back 3 years to offset any gains in those years.  CRA does track your capital losses and your Notice of Assessment will confirm the losses available to be claimed.