Well he is only 23 (24 next month), but never even get into top 3 of Ballon D'or, so apparently he cannot be compared with past great yet.
But if you ask me where he is at now:
Tier 1: Platini, Zidane
Tier 2: Kopa
Tier 3: Henry, Benzema, Fontaine, Tresor, Giresse, Papin, Cantona, Deschamps, Mbappe
Tier 4: Tigana, Griezmann, Blanc, Ribery, Desaily, Vieira, Thuram
He is currently probably in near end of tier 3. In future he has chance to challenge Zidane or even Platini at tier 1.
To give better perspective of best player rankling (individual honours) in their respective era,
In terms of Ballon D'or ranking:
1. Platini (winner x3, 3rd x2)
2. Kopa (winner x1, 2nd x1, 3rd x2)
3. Zidane (winner x1, 2nd x1, 3rd x1)
4. Papin (winner x1)
5. Benzema (winner x1)
6. Henry (2nd x1, 3rd x1)
7. Tigana (2nd x1)
8. Giresse (2nd x1)
9. Griezmann (3rd x2)
10. Fontaine (3rd x1)
11. Cantona (3rd x1)
12. Ribery (3rd x1)
In terms of French player of the year ranking:
(only from 1996 onwards, french players oversea were eligible, hence the likes of Platini, Cantona could have win a few more )
1.Henry (5 times)
2. Benzema (4 times)
3. Giresse (3 times)
4. Ribery (3 times)
5. Platini (2 times) (could have been 6 times)
Papin (2 times)
Zidane (2 times)
Mbappe (2 times)
In terms of team trophies:
1. Deschamps (WC x1, Euro x1, CL x2, trophies x16)
2. Zidane (WC x1, Euro x1, CLx1, trophies x15)
3. Henry (WC x1, Euro x1, CLx1, trophies x18)
4. Vieira (WC x1, Euro x1, trophies x22)
5. Thuram (WC x1, Euro x1, trophies x12)
6. Blanc (WC x1, Euro x1, trophies x8)
7. Kante (WC x1, CL x1, trophies x10)
6. Benzema (CL x5, trophies x31)
7. Platini (Euro x1, CL x1, trophies x12)
8. Kopa (CL x3, trohies x11)
9. Mbappe (WC x1, trophies x14)
10. Pogba (WC x1, trophées x12)
11. Griezmann (WC x1, trophies x7)
12. Ribery (CL x1, trophies x25)
13. Papin (CL x1, trophies x13)
In terms of career goals:
1. Benzema 447
2. Henry 417
3. Platini 353
4. Papin 346
5. Fontaine 288
6. Griezman 276
7. Mbappe 251
I think its just matter of time, in another 7-8 years, he could be up there with the very best.
Least to say I think he is destined to be all time top goalscorer in France and as French player.
Staying at PSG I can see him winning as many team trophies as Benzema (who is on 31). But whether he will have more Ballon D'ors, really depends on whether he could win a few more WC/Euro/CL in future. He has all the support/set up to win all these big trophies though, as he is playing as tailsman for a top country and top football club, and so he will be always in contention for those.