why is my capital gains income $38108 rather than $37230 as indicated on income page?

[M-MTax]

The income page (capital gains section) probably doesn't include any capital gain distributions you may have had from the likes of mutual funds. 

[LeticiaF1]

Capital gains not only include gains you had on assets (stocks, bonds, digital assets like cryptocurrencies and NFTs, jewelry, coin collections, and real estate).  They can also include capital gain distributions reported on Form 1099-DIV that are being included on your return.  I would suggest that you review your Schedule D at the end of your return to see all that is included.  

Guide to Schedule D: Capital Gains and Losses

How do I preview my TurboTax Online return before filing?

@ldornba