1099-DIV Box 9 Partial Cash Liqudation

I've seen related posts on this subject, but nothing that specifically addresses my situation.

In TurboxTax Premier 2022, I entered all amounts from my 1099-DIV including Box 9. When i was done, TT said we would handle the cash liquidation distribution later, and to go to "Investment Income". When I go to "Investment Income" there is nothing that is obvious to help me.

 

In my case, Box 9 was from stock ticker STOR, but did not represent my entire holding, and I continued to hold the stock thru the end of the year. I saw in post that "... Any liquidating distribution you receive is not taxable to you until you have recovered the basis of your stock..." This statement is meaningless to me; I know what basis means, but I've never heard of recovering basis. Further, I read where these distributions are treated like capital gains, but I do not know the basis for this either.

 

Any specific help is appreciated.