To think Trump will declare himself as a God?

I wouldn’t be surprised. Cult leaders - which he is - often do.

Has he appointed his horse as a senator yet?

I understand where you're coming from OP. There's so much about the rhetoric coming from Trump and his cronies about being chosen as a saviour that's directly adjacent to one particular early 20th century leader that watching the inauguration and following speeches left me feeling really queasy.

Religion and politics are a scary mix. If you really want to delve into it from a US perspective there is an interesting two part documentary exploring the impact of evangelical Christian thought on policy called "Praying for Armageddon". It's by Al Jazeera. Some quite influential religious people believe that the Gaza situation should be encouraged to play out in order to bring about the second coming of Christ.

It's easy to scoff and dismiss but if people have deranged beliefs, money, power and the ears of government all hell could break loose. Some people will do anything for money and power, so non-believers who are greedy and amoral will think nothing of claiming allegiance even if they don't truly believe if the price is right.

I think there is no limit to Trump's ego, and elevating himself to God-like status due to divine right doesn't sound far-fetched to me.

The Englush commentator for Sky's coverage of the inauguration said there was a distinct lack of any humility in the whole thing, and I got strong "world domination" vibes from the whole thing. With tech, and economic policy, a determined megalomaniac doesn't need to put military boots on foreign territory to conquer, and I think this is why he has surrounded himself with the mega rich and the tech bros.

I'm looking at the future with a huge amount of trepidation.

I am avoiding coverage of US politics, Trump in particular, at the moment and for the next 4 years - unless a miracle happens and somebody sane somehow becomes President in that time (not holding my breath for that). Although I don't think Trump would declare himself God, I do firmly believe that he is ready to establish a hereditary dictatorship and that the US is screwed.

He is already the God Emperor, elevated to deity back in 2019.

https://en.wikipedia.org/wiki/God_Emperor_Trump

I was surprised by his reaction to being shot at. I thought he was a narcissist who enjoyed weilding power, who would run away with his tail between his legs when things got real. But he does actually seem to believe he has some kind of calling.
But I think that's more common among leaders of countries than we realise. Blair and Bush jnr. had some weird thing going on where they believed God had put them in their respective posts in order to allow the invasion of Iraq to go ahead.
It feels weirder with Trump because he's so weird.

You sound fairly unhinged yourself. Plenty of people express thanks to god for their current position including the King of England and the Pope.
In answer to your question no I don't believe Trump will declare himself to be God.