If this was you first automatic trans install then you may have broken the pump inside transmission
Google: how to seat torque converter
2min video that shows how you MUST seat torque converter inside the bellhousing first and keep it in all the way when installing the transmission
Same on all automatics, not a Ford thing
The bell housing should go flush against the engine block, if you had to tighten bolts to FORCE them together that would have broken the pump
You can check dipstick level engine OFF
Then check it engine ON
If pump is working the level will DROP down, if it doesn't then pump is broken
Broken pump means no forward or reverse and full rebuild to replace it
Did this on my first automatic install 40 years ago, expensive lesson you never forget, and mine was even a fresh rebuilt transmission, had to rebuild again but just with new pump