I'm looking for the font used in my favorite tank top, RVCA. See the picture below from https://www.tactics.com/rvca/flip-rvca-tank/white

Also another one I am curious about is in the following photo.  Thank you in advance for your help!

I'd say RVCA is hand drawn based on something like Compacta or Impact, though you'll have to straighten the tail in the R and turn the V upside down for an A.

RVCA looks hand drawn using 10 straight lines, very easy to re-create in Illustrator. Similar to Runes from Luc Devroye, notice the R is different. The Boustrophedon, designed by Marc Tassell or Xerxes by Tim Ryan.