Hi,
If your device lies into below models then it supports 8 virtual VLAN interfaces if I am not wrong.
Models
HPE OfficeConnect 1920 8G Switch JG920A
HPE OfficeConnect 1920 8G PoE+ (65W) Switch JG921A
HPE OfficeConnect 1920 8G PoE+ (180W) Switch JG922A
HPE OfficeConnect 1920 16G Switch JG923A
HPE OfficeConnect 1920 24G Switch JG924A
HPE OfficeConnect 1920 24G PoE+ (180W) Switch JG925A
HPE OfficeConnect 1920 24G PoE+ (370W) Switch JG926A
HPE OfficeConnect 1920 48G Switch JG927A
HPE OfficeConnect 1920 48G PoE+ (370W) Switch JG928A
and if your devices lies under below models then it support 16SVI's this is what my colleague @Ivan_B said.
Models
HPE OfficeConnect 1920S 8G Switch JL380A
HPE OfficeConnect 1920S 24G 2SFP Switch JL381A
HPE OfficeConnect 1920S 48G 4SFP Switch JL382A
HPE OfficeConnect 1920S 8G PPoE+ 65W Switch JL383A
HPE OfficeConnect 1920S 24G 2SFP PPoE+ 185W Switch JL384A
HPE OfficeConnect 1920S 24G 2SFP PoE+ 370W Switch JL385A
HPE OfficeConnect 1920S 48G 4SFP PPoE+ 370W Switch JL386A
Thanks!