While I'm fully agree with the "this isn't a tech problem" comment, there are indirect ways that people can help.
I think the biggest problems many are going to face aren't related to the illness itself, but the effects of self-isolation and the outcomes, such as:
* Dealing with your loved ones getting sick or dying - online services to talk to others that are suffering or going through tough times would be good.
* Boredom - putting that "empty time" to good use by building your skills.
* Loneliness - providing a platform to utilise existing or new social networks to make people feel that they aren't alone.
* Volunteering - one of the biggest hit areas is going to be in elderly care, and to be honest it wouldn't be unsurprising to see care homes shut down and relatives being left to look after their relatives. Anything that can help people in these situations would be welcomed, whether it's supplies, stuff for people to do, etc.
* Aiding remote workers. For many, remote working is an alien concept, so if you've got experience in working from home in an optimal way create an in-depth guide to help others.
* Small gym relief funds - many gyms or martial arts schools have shut down, and many practitioners rely on teaching as their sole form of income. Building a relief fund for those small businesses would help tremendously, on the basis that it can be "paid forward" in the future through private lessons, online instructionals, etc.