From the author's README on Thunderstore

REAL Skateboards Jack Olson Good Times Deck

This mod adds Jack Olson's signature REAL Skateboards Good Times deck to ReSkate. Released in 2021, this deck is for my fellow Minnesotans, as it's modeled after Bunny's Bar & Grill in St. Louis Park, MN. THE board is autographed and hanging on the wall at the front of the restaurant, so stop by and check it out some time!

Installation

If downloading from Thunderstore, this mod should be placed in your ReSkate "Mods" folder. Inside of your Mods folder, create a subfolder titled "REAL Skateboards Olson - Good Times Deck" (or whatever you want to call it) and place the contents inside of that.

Install REAL Skateboards Olson Good Times Deck

You need ReSkate and your own copy of skate. on Steam.

Open ReSkateLauncher.exe and go to MODS.
Search for REAL Skateboards Olson Good Times Deck and click install. The launcher also installs anything it depends on.
Press PLAY. In game, the MODS tab of the ReSkate menu (Insert) turns it on and off.

Or install it by hand: download the .zip and drop it on the launcher window, or unzip it into its own folder in Mods\ beside Skate.exe.

Maps show up in the ReSkate menu's level list. To join a server running a custom map, you need the same map installed. If the game won't load after installing, see known issues.

skatemods doesn't host or review this mod. The download comes straight from Thunderstore. Only install mods you trust, because scripts can run code.