Honor Level 50

You get the now account wide title [title=465] + 3rd PVP appearance tint for your legion artifact (unlocks for all alts account wide).

BfA Honor Level

Reward

Type

Honor Level 5

[item=142380] / [item=142379]

Pet

Honor Level 10

[item=134026] + Appearance

Toy + Artifact

Honor Level 15

[item=140228]

Mount

Honor Level 20

[item=139775] / [item=139776]

Pet

Honor Level 25

[title=464]

Title

Honor Level 30

[item=134031] + Appearance 2

Toy + Artifact

Honor Level 40

[item=140233]

Mount

Honor Level 50

[title=465] + Appearance 3

Title + Artifact

Honor Level 60

[item=134032]

Toy

Honor Level 70

[item=140408]

Mount

Honor Level 80

[title=466] + Appearance 4

Title + Artifact

Honor Level 90

[item=134034]

Toy

Honor Level 100

[title=503]

Title

Honor Level 125

[item=140232]

Mount

Honor Level 150

[item=140230]

Mount

Honor Level 175

[item=164310] (To be added)

Toy

Honor Level 200

[title=468]

Title

Honor Level 250

[item=140407]

Mount

Honor Level 300

[title=518]

Title

Honor Level 400

Pet (To be added)

Pet

Honor Level 500

[item=164250]

Mount

Old Legion Prestige table:

Spoiler

Season

Prestige

Reward

Type

1

1

[item=139775] / [item=139776]

Pet

2

Artifact Appearance

Artifact

3

[item=134026]

Toy

4

[item=140228]

Mount

5

[title=464]

Title

2

6

Artifact Tint

Artifact

7

[item=142380] / [item=142379]

Pet

8

[item=134031]

Toy

9

[item=140233]

Mount

3

10

[title=465]

Title

11

Artifact Tint

Artifact

12

[item=134032]

Toy

13

[item=140408]

Mount

14

[title=466]

Title

4

15

Artifact Tint

Artifact

16

[item=134034]

Toy

17

[item=140232]

Mount

18

[title=503]

Title

5

19

Artifact Power

Artifact

20

30x [item=137642]

-

21

[item=140230]

Mount

22

[title=468]

Title

6

23

Artifact Power

Artifact

24

30x [item=137642]

-

25

[item=140407]

Mount

26

[title=518]

Title

Other info:
So how much of a difference is legion prestige to bfa honor levels?

In Legion, Prestige 1 to 26 was 45k honor per prestige (not factoring in the shorter prestige 1), so 45,000*26 = 1,170,000 honor to get prestige 26.

In BfA, each Honor level requires 8800 honor and there is 500 Honor levels, so 8,800*500 = 4,400,000 honor to get honor level 500.

Honor and Prestige Rewards for BfA

005 - Honor Level 5 - pet [item=142379] / [item=142380]
010 - Honor Level 10 - toy [item=134026]
015 - Honor Level 15 - mount [item=140228]
020 - Honor Level 20 - pet [item=139775] / [item=139776]
025 - Honor Level 25 - title [title=464]
030 - Honor Level 30 - toy [item=134031]
040 - Honor Level 40 - mount [item=140233]
050 - Honor Level 50 - title [title=465]
060 - Honor Level 60 - toy [item=134032]
070 - Honor Level 70 - mount [item=140408]
080 - Honor Level 80 - title [title=466]
090 - Honor Level 90 - toy [item=134034]
100 - Honor Level 100 - title [title=503]
125 - Honor Level 125 - mount [item=140232]
150 - Honor Level 150 - mount [item=140230]
175 - Honor Level 175 - toy Glorious Pennant Coming Soon
200 - Honor Level 200 - title [title=468]
250 - Honor Level 250 - mount [item=140407]
300 - Honor Level 300 - title [title=518]
400 - Honor Level 400 - Coming Soon
500 - Honor Level 500 - Coming Soon

The title is not sorted properly (not under P, or under the ...P)