Rough version of how he did it:
- I used a cloud stock and water stock.
- After placing both, I used some gradient maps (mostly the violet stuff).
- Using a bubble brush, I placed some bubbles in the water, and added a small cloud layer in the water and set it to Color Dodge (or Linear, I forgot).
- Grab a stock image of rain on a car window (a big one) and try mask out the window, leaving the raindrops in (or you can hope for the best and lower the opacity).
- I used my own font for the Faze Aquas (AKU&KAMU, a free font on Dafont.com), and when the Aquas reaches the water, I did some liquefying (smudging and warping could work I suppose)
- Tried to find a spiky font for AzTech Design.
- Traced the logo, added a gradient, small and light-grey stroke, drop shadow and diagonal pattern for a metallic effect.
- Found the vectors for the tags on FreePik.
Dunno if that's how he did it, but I did something similar in a matter of minutes
I actually deleted it as soon as I made it, cause my C Drive is full (dunno why), but hope this sort of helps.