quick look on
Falcon 9 Block 5
B1046 2018-2020 flow 4 time, destroy during crew Dragon Abort test.
B1047 2018-2019 flow 3 time, expended on Atmos-17 launch do heavy payload
B1048 2018-2020 flow 5 time, destroy during landing as miss the Drone Ship
B1049 2018- flow 5 time, refurbish for august Starlink mission
B1050 2018 flow 1 time, failed land landing and water down, scrapped
B1051 2019- flow 5 time, for moment return to habor after starlink mission
B1052 2019- flow 2 time, Falcon Heavy Side Booster, Stored for next mission
B1053 2019- flow 2 time, Falcon Heavy Side Booster, Stored for next mission
B1054 2018 flow 1 time, expended on GPSIII launch do high Orbit
B1055 2019 flow 1 time, Falcon Heavy core, destroy by accident during return to launch site...
B1056 2019-2020 flow 4 time, destroy during landing as miss the Drone Ship
B1057 2019 flow 1 time, Falcon Heavy core, destroy as miss drone ship
B1058 2020- flow 2 time, Refurbish and storage
B1059 2019- flow 3 time, Refurbish for next flight in august 2020
B1060 2020- flow 1 time, Refurbish for next flight in august 2020
B1061 2020- new build undergoes testing
B1062 2020- new build undergoes testing
B106X 202? new build Falcon Heavy core for Launch end 2020 begin 2021
That's 16 Block 5 (17 for that new FH core)
7 Falcons 9 and 2 Falcon Booster (yet to build core)