What is claimed is:1. A method of transmitting and receiving a signal by a user equipment (UE) in a wireless communication system, the method comprising:receiving downlink control information (DCI) scheduling multiple physical uplink shared channels (PUSCHs) to be transmitted on a serving cell; andtransmitting the multiple PUSCHs on the serving cell based on the DCI,wherein a payload size of the DCI is determined based on a larger of a number of information bits for scheduling a single PUSCH and a number of information bits for scheduling the multiple PUSCHs by adding zeros to a smaller of the number of information bits for scheduling the single PUSCH and the number of information bits for scheduling the multiple PUSCHs, andwherein the DCI includes no codeblock group transmission information (CBGTI) field based on the scheduling of the multiple PUSCHs.2. The method of claim 1,wherein the DCI includes an N-bit redundancy version (RV) field based on the scheduling of the multiple PUSCHs, andwherein the N bits are determined based on a maximum number of PUSCHs schedulable by the DCI.3. The method of claim 2, wherein each of the N bits is related to one PUSCH among the schedulable PUSCHs.4. A user equipment (UE) configured to transmit and receive a signal in a wireless communication system, the UE comprising:at least one transceiver;at least one processor; andat least one memory operably connected to the at least one processor and configured to store instructions that, when executed, cause the at least one processor to perform operations comprising:receiving downlink control information (DCI) scheduling multiple physical uplink shared channels (PUSCHs) to be transmitted on a serving cell; andtransmitting the multiple PUSCHs on the serving cell based on the DCI,wherein a payload size of the DCI is determined based on a larger of a number of information bits for scheduling a single PUSCH and a number of information bits for scheduling the multiple PUSCHs by adding zeros to a smaller of the number of information bits for scheduling the single PUSCH and the number of information bits for scheduling the multiple PUSCHs, andwherein the DCI includes no codeblock group transmission information (CBGTI) field based on the scheduling of the multiple PUSCHs.5. The UE of claim 4,wherein the DCI includes an N-bit redundancy version (RV) field based on the scheduling of the multiple PUSCHs, andwherein the N bits are determined based on a maximum number of PUSCHs schedulable by the DCI.6. The UE of claim 5, wherein each of the N bits is related to one PUSCH among the schedulable PUSCHs.7. An apparatus for a user equipment (UE), the apparatus comprising:at least one processor; andat least one computer memory operably connected to the at least one processor and configured to, when executed, cause the at least one processor to perform operations comprising:receiving downlink control information (DCI) scheduling multiple physical uplink shared channels (PUSCHs) to be transmitted on a serving cell; andtransmitting the multiple PUSCHs on the serving cell based on the DCI,wherein a payload size of the DCI is determined based on a larger of a number of information bits for scheduling a single PUSCH and a number of information bits for scheduling the multiple PUSCHs by adding zeros to a smaller of the number of information bits for scheduling the single PUSCH and the number of information bits for scheduling the multiple PUSCHs, andwherein the DCI includes no codeblock group transmission information (CBGTI) field based on the scheduling of the multiple PUSCHs.8. The apparatus of claim 7,wherein the DCI includes an N-bit redundancy version (RV) field based on the scheduling of the multiple PUSCHs, andwherein the N bits are determined based on a maximum number of PUSCHs schedulable by the DCI.9. The apparatus of claim 8, wherein each of the N bits is related to one PUSCH among the schedulable PUSCHs.