Whatever you do do not beat on the End of the shaft Hub with a Punch to drive it out. Several people have had the shaft end of the Hub swell and become evene harder to get out.
And, a New one is over $300.

When I did mine as some other members have done I used an old Brake Rotor attached to the Hube and Beat on the Rotor to get the Hub off.
In my case I was salvaging the Hub off of a damaged Rear Trailing Arm.

The dent may be away from the sealing area but if you want you could:
File down and use wet dry sand paper on the burr/dent. Degrease it good with Brake Cleaner and fill the dent with JB Weld.
Us the wet and dry sand paper and dress down the JB Weld after it is well cured/hardened.

If you know someone that has a Bearing Separator; often tightening it right where the Bearng Race and Shaft abutt each other pushes the Race away a bit.
After that you can tap on the Separator and the Race wil Eventually come off.
Also heat witha Propane Torch often expands them enoug to make them a little easier to come off.

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84 300D, 82 Volvo 244Gl Diesel