On approach, they are managed target speeds, but they are not a manoeuvring speed
Well FCOM 1.22.40 says:
The FAC computes :
The minimum and maximum speeds :
o VSW (stall warning)
o VLS
o VFE and VFE for the next configuration
o VLE
o VMO/MMO
The
maneuvering speeds :
o Green Dot Speed
o S speed
o F speed