The deadline for filing comments with the SEC on their proposed climate change disclosure rule is June 17, 2022. The comment does not have to be technical or use legal language. All you need to do is send an email to firstname.lastname@example.org with this in the subject line: Release No. 33-11042; File No. S7-10-22
And all you need to say is that you support the proposed rule. It will help if you add something about the importance of clear, consistent disclosure of the way that corporations consider climate change in their operations and strategy. If you own stock, directly or through a mutual fund or retirement fund, say so. If you do not, you can say that you plan to buy stock in the future if the disclosures give you confidence that the companies are adequately addressing the risks and opportunities of climate change.
If you want to read other comments, check here. It will give you an idea of the arguments people are making for and against the proposal.