Depends on the privacy setting, but if you have the authority to invite new members, you can go to the community tab, tap Invite New Members. Then you have the following ways to invite:
- Share invite link to your friends via Facebook, Line, WhatsApp, WeChat, etc.
- You can also copy the invite link and paste it anywhere else.
Please take a minute to check the auto accept settings of your community. You can check by: Community Settings > Privacy.