Trump confirmed two gay judges to the courts, both being "firsts" in their own unique ways.  Trump supported amending the 1964 Civil Rights Act to also prevent discrimination against same-sex couples.  Trump was also rumored to be one of the first Palm Beach private club owners to accept an openly gay couple.
"Donald Trump and Mike Pence have given hate against LGBTQ+ individuals safe harbor and rolled back critical protections for the LGBTQ+ community. By blocking the ability of transgender individuals to openly serve their country, denying LGBTQ+ people access to critical health care, proposing policies allowing federally funded homeless shelters to turn away transgender people and federally funded adoption agencies to reject same-sex couples, and failing to address the epidemic of violence against transgender people—particularly transgender women of color—the Trump-Pence Administration has led a systematic effort to undo the progress President Obama and Vice President Biden made."