Yes, of course, a decrease in the Fed rate, as a general rule, leads to an increase in the price of Bitcoin.
Bitcoin is denominated (valued) in US dollars. Accordingly, a weakening of the US dollar leads to a strengthening of the first cryptocurrency (an increase in its value). The Fed's discount rate (refinancing rate) is the rate at which the Fed gives loans (credits) to commercial banks.
Commercial banks, in turn, give loans to legal entities and individuals at a higher rate. Thus, a decrease in the discount rate leads to cheaper loans and credits, which stimulates the economy, leads to an acceleration of the turnover of fiat currency and, accordingly, makes the US dollar cheaper.
Investors no longer seek to hold US dollars for the purpose of saving, but are more willing to put them into circulation. All this strengthens Bitcoin and leads to an increase in its price.