You cant get infusions, homunculus servant, at level 1.... so i'm assuming level 2 base

When PB is 2 at level 2:
Hit Points 1 + your Intelligence modifier[4] + your artificer level   [6]    assauming +4 int mod
Saving Throws Dex(2) +2 plus PB                                                       [6]

Skills Perception +0 plus PB × 2, Stealth +2 plus PB                       Perc: +4, Stealth +4

2+2 is the same as 2x2..

Honestly its math... :D

At 10th level, assuming Int 20 +5

Homunculus has:  HP: 16, Dex save: 16, Perception: 8, Stealth: 6
Assuming you havent cast spells or given it some of your attunements

Quote from DeZwarteMaan>>

You cant get infusions, homunculus servant, at level 1.... so i'm assuming level 2 base

When PB is 2 at level 2:
Hit Points 1 + your Intelligence modifier[4] + your artificer level   [6]    assauming +4 int mod

[sic]

Honestly its math... :D

[sic]

At 2nd level, with an Int mod of +4, your Homunculus Servant’s HP would be 7, not 6.