no sales number released yet, but if you look at the
Steam Charts, the higest amount of users online is 830k. This means on steam only, CP2077 sold more than 830k copies, as i doubt every single person who have bought it have all played it at the exact same time. It is sitting on a 'Mostly Positive' rating, and I doubt many of them would like a refound. at the time of writing this, 533k people are playing CP2077. This is a good number.
Let's take it into £. each copy of CP sold on steam costs £49.99, lest assume the low number of 830k units sold = £41.491.700. Valve takes 30% (depends on contract with CDPR), which leaves £29.044.190. And this is from steam only. No, I do not think CDPR is going bankrupt just yet.
(yes I know it is a quick and dirty calculation, yes I know people can buy steam keys outside of steam for different values, yes i know regional pricing makes it difficult)