Note Webull states “may be”, not “will be”, so your fund is not a sure thing.
Timing: ACH deposits typically take 3-4 business days to process. During this time, your account may be credited with Instant Buying Power, enabling you to trade immediately with your unsettled funds. Deposits made after 4:00pm ET or on weekends may require an additional day or two to become available.
Webull. Help Center. What should I know about ACH transfers