On Monday 14th of June 2021, Uniswap v2 FLX/ETH LPs will start to accrue FLX rewards. The rewards will be distributed on a monthly basis and can be claimed using the Reflexer dashboard.
The FLX/ETH Uniswap v2 pool can be found here.
Currently, FLX/ETH LPs receive 90 FLX per day (32,850 FLX per year). LPs do not need to stake their tokens anywhere for now (this will change in the future), they simply need to keep the tokens in their wallets.