First thing I'd do is fund a worldwide campaign to collect and spay/neuter all stray dogs and cats. I would simultaneously build enormous rehabilitation centers to actually, you know, rehabilitate criminals instead of endorsing the prison industrial complex.
Next, I'll buy a mountain, preferably a 14ker or so. Then I'd assemble all the engineers and necessary crews to carve the mountain into a giant penis.
Obviously by this time I'll need a substantial security force, and at this point it will be large enough to assume the identity of an army. Once my personal security is capable of defending me from any physical harm, I'd create the largest cybersecurity force in the world. I would literally control anything with a computer chip. Next, i would form military branches to operate on land, sea, air and space.
Finally, I'd assemble the world's greatest physicists to work on a method of interstellar travel, presumably through warping gravity and space time. This would also be helpful for exploring the deep sea, which is probably more interesting than any other life form around our galaxy.
Maybe I'd also buy Tesla and convert them to internal combustion engines. Haha idk.