From my page on localizing UIs in Unreal, you can use FFormatNamedArgs and pass that into FText::Format:
int32 Value = 150;
FText FormatInput = FText::FromStringTable("MyTable", "HealthFormat");
FFormatNamedArguments Args;
Args.Add("HealthValue", Value);
FText FormattedText = FText::Format( FormatInput, Args );