Will Donald Trump resume hosting his Apprentice shows when he leaves office?

I don't believe so as I've heard he's under consideration to be the host of Jeopardy starting in March, 2021.

Trump had better concentrate on his legal defense against the impending charges of fraud and tax evasion.  

The Apprentice TV show saved him from financial ruin a few years back but the networks may be reluctant to deal with him again after he has badmouthed them so mercilessly.  The media helped him get money and the presidency but he is such an ingrate that they'll probably shun him. 

I don't think he would have to. He can fill a stadium and get more viewers than the NFL right now. So, he could do anything he wants to do.

Trump Rally, Oct 1st, 2020

He should go do a reality show is Russian that will be nice for him.

I doubt it. More than likely he will be spending time complaining about how much his legal fees are costing him to stay out of jail.

Nope.

He will be starting his 2024 Presidential campaign.